Two football players have a head-on collision and grab onto each other's uniforms. The 80
kg Pennridge Ram was moving at 3 m/s, while the 70 kg Souderton player was moving in
the opposite direction at 2.5 m/s. What is their final velocity after impact?

Answers

Answer 1
You need to calculate the momentum of each. 80x3 = 240 Kg m/s and 70x2.5 = 175 kg m/s

Related Questions

What is the potential energy of a 2 kg plant that is on a windowsill 1.3 m high

Answers

Answer:

25.506J

Explanation:

Ep = mgh

given that ,

m = 2kg

h =1.3m

g = 9.81 m/s^2

Ep= 2 × 1.3 × 9.81

Ep= 25.506J

A cannon is fired horizontally at 243 m/s off of a 62 meter tall, shear vertical cliff. How long will it take the
cannon ball to reach the ground?

Answers

I have your probably older and smarter than me what grade are you in

A student weighs 530 N. The walk to the top of a 3m staircase. It takes them 5 seconds. How
much work did they do?
*

Answers

Answer:

W = 1590 J

Explanation:

We could use the formula of potential energy to find work as both have the same units,

                    W = mgh

since weight = mg so,

                     Work = weight x height

                               = 530 x 3

                               = 1590 J

Answer:

The work will be 1590 J

since the formula is W = F x D so I cancel the time

Explanation:

Given:

(Force) F = 530N

(Distance)D = 3m

Unknown:

W or Work

Formula and Solution:

W = F x D

W = (530N) (3m)

Final Answer:

W = 1 590 N·m or simplify as 1590 J

non examples of kinetic energy

Answers

Answer:

Anything that isn't moving

10. A force of 24 N was required to accelerate an object at a rate of 4 m/s-. What was the object's mass?


11It look 2.3 seconds for a car's velocity to change from 20 m/s to 35 m/s. The mass of the car was 1370 kg. What force was required to cause the acceleration? (Hint: First calculate the acceleration.)​

Answers

Answer:

?

Explanation:?

What do x-direction and y-direction refer to when discussing an object's motion

Answers

Answer:

The x-direction and y-direction refer are used to refer to the location of an object as well as to the components of the motion of the object in a two dimensional space

Explanation:

In physics, in the analysis of the motion of an object in two dimensional space, the relative location of the object is specified using the measured distances in the x-direction from the y-axes and y-direction from the x-axes

In order to accurately specify the motion of the object, information regarding the component of the motion of the object in the x-direction and the component in the y-direction are required

What a noncrystalline solid

Answers

Google is free you know

Describe at least three ways our understanding of the atom has changed.

Answers

Answer:

The first model of the atom was developed by JJ Thomson in 1904, who thought that atoms were composed purely of negatively charged electrons.

This theory was then disproved by Ernest Rutherford and the gold foil experiment in 1911, where Rutherford shot alpha particles at gold foil, and noticed that some went through and some bounced back, implying the existence of a positive nucleus.

In 1926, the Austrian physicist Erwin Schrödinger created a quantum mechanical model of the atom by combining the equations for the behavior of waves with the de Broglie equation to generate a mathematical model for the distribution of electrons in an atom.

Explanation:

The law of conservation of energy tells us

A. that energy can be transformed from one form to another

B. energy cannot be created or destroyed

C. the total amount of energy will remain the same

D. All of the above

Answers

Answer:

it is A

Explanation:

because energy can neither be created nor destroyed - only converted from one form of energy to another.

Barbara plotted an elevation below sea level on a number line and labeled it A. She plotted Point B above 0, a distance that is exactly as far from 0 as Point A is. Explain what you know about Point B.

Answers

Answer:

Point A is the same distance below 0 as Point B is above 0.

Point B is a positive integer.

Since a number and its opposite are the same distance from 0 in opposite directions, Point B is the opposite of Point A.

Explanation:

Answer:

Sample Response: Because Point A is negative and the same distance below 0 on the number line as Point B is above it, Point B is both positive and the opposite of Point A.

Explanation:

Lili 57 seconds to walk from Clash of Clan library at the distance between the classroom in library 30am at whatever speed did Lily walk in m/min __m/min​

Answers

Answer:

7mph

Explanation:

jayleen has a mass of 35 kg and is riding her bike and experiences a 62 N force as shown. What is the expected magnitude of acceleration for Jayleen?
1.8 m/s²
2170 m/s²
343 m/s²
0 m/s²

Answers

Answer:

The answer is 1.8 m/s²

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

[tex]a = \frac{f}{m} \\ [/tex]

where

m is the mass

f is the force

From the question we have

[tex]a = \frac{62}{35} \\ = 1.7714285...[/tex]

We have the final answer as

1.8 m/s²

Hope this helps you

Determine which wave carries the greater
amount of energy. explain

Answers

The second one( tryna fill the space )
The last one Bec water travel really fast

Igneous rocks are formed from _____.

sedimentary rocks
fossils and shells
magma
eroded land

Answers

Answer:

magma

Explanation:

actually cooling and solidification of magma

The boundary between areas of high and low pressure:
A Front
B Barometer
C Weather
D Air pressure

Answers

The answer is A, Front is a weather system that separates it.

13. Which of the following would have NO momentum?
A person running
A table
A moving bus

Answers

Answer:

a table

Explanation:

A car traveling initially at the speed of 30 m/s slows down at the rate of -2m/s^2 for a distance of 60 meters. What is the car’s velocity after covering this distance?

Answers

Answer:

Vf = 25.7 [m/s]

Explanation:

To solve this problem we must use the following kinematics equation:

[tex]v_{f} ^{2}= v_{i} ^{2}-(2*a*x)[/tex]

where:

Vf = final velocity [m/s]

Vi = initial velocity = 30 [m/s]

a = desacceleration = 2 [m/s^2]

x = distance = 60 [m]

Note: the negative sign in the equation means that the car slows down.

Now replacing:

[tex]v_{f}^{2}=(30)^{2}-(2*2*60)\\ v_{f}^{2} = 660\\v_{f} =\sqrt{660} \\v_{f}=25.7[m/s][/tex]

I need this one fast!!!!

Nitrous oxide is the chemical name for "laughing gas." What are the names and the number of atoms in a molecule of
nitrous oxide, N2O?

1.one nitrogen atom and two oxygen atoms

2.two nitrogen atoms and one oxygen atom

3. one nitrogen atom and one oxygen atom

4. two nitrogen atoms and two oxygen atoms

Answers

Answer:

b

Explanation:

there are 2 nitrogen and 1 oxygen, you can tell by the little number after the letter. if there is no number, then it's just one atom

Answer:

B.

Explanation:

I got it right on my test.

how long does it take a dollar bill that is 6 inches long to drop through its length (hint: Convert the length to meters and use a formula to find the time taken for the dollar to free fall through this length)​

Answers

Answer:

3.4seconds

Explanation:

if a dollar was times for how long it would fall down to its length it would be 3.4 seconds

Which items are needed for a plant to become fertilized?

egg

pollen

embryo

seed

Answers

The answer is pollen.

Fertilization in flowering plants happens through a process called pollination.
Pollen of course or it could be seed

Is there work being done when kicking a soccer ball?

Answers

Answer:

Yes.

Explanation:

There is potential energy in your leg that once comes in contact with the ball turns into kinetic energy.

Yes indeed there is work being done when kicking a soccer ball

what is the acceleration of an object that entered of a force 200 N if the object mass was 100 kg?

Answers

Answer:

The answer is 2 m/s²

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

[tex]a = \frac{f}{m} \\ [/tex]

where

f is the force

m is the mass

From the question we have

[tex]a = \frac{200}{100} \\ [/tex]

We have the final answer as

2 m/s²

Hope this helps you

How long does it take a dropped object to fall 45 meters?

Answers

Answer:

If we forget about drag for a second then any object will accelerate at 9.8 m/s/s. The distance traveled is (9.8 m/s)/2 * (x seconds)^2, so solving for 45 meters the no-air fall will take 3.06 seconds and reach 30 m/s or 108 kph or 67.1 mph

Explanation:

True or False
The ecological niche of a species is the place where its members live.

Answers

Answer:

true

Explanation:

Which of the following statements is accurate when considering the role of cognition in shaping behavior? A. Cognition helps determine if a consequence is influential enough to control behavior. B. Cognition will most likely decrease the chance for classical conditioning to work. C. One’s cognitive processes are irrelevant when it comes to shaping behavior. D. One’s cognitive processes only work in shaping behavior when a particular consequence is desired. Please select the best answer from the choices provided A B C D

Answers

Answer: the answer is A.

Explanation:

brainliest please?

Answer:

A.

Cognition helps determine if a consequence is influential enough to control behavior.

Explanation:

This is right on edg. 2020

A baseball is thrown vertically downward from the top of a 155 m tower with an initial velocity of -25 m/s. How long will it take, until it reaches the ground?

Answers

Answer:

t = 2.55 s

Explanation:

Given that,

Height from which the baseball is thrown, h = 155 m

Initial velocity of the baseball, u = -25 m/s

We need to find the time taken by it to reach the ground. Let the time is t. Using equation of kinematics to find it as follows:

[tex]v=u+at\\\\t=\dfrac{v-u}{a}\\\\t=\dfrac{0-(-25)}{9.8}\\\\t=2.55\ s[/tex]

So, it will take 2.55 seconds to reach the ground.

To determine the height of a bridge above the water, a person drops a stone and measures the time it takes for it to hit the water. If the time is 2.3 s, what is the height of the bridge? Neglect air resistance.

a. 32 m
b. 52 m
c. 26 m
d. 14 m
e. 10 m

Answers

s = 1/2 a t^2 = 1/2 x 9.8 x 2.3^2 = 26m

A stone dropped from a 26 m bridge, takes 2.3 s to reach the water.

A stone is dropped from a bridge and it experiences a uniformly accelerated rectilinear motion. It takes 2.3 s for the stone to reach the water.

We can calculate the height of the bridge, which is equal to the displacement of the stone, using the following kinematic equation.

[tex]s = ut + \frac{1}{2} a t^{2} = (0m/s)(2.3 s) + \frac{1}{2} (9.8m/s^{2} ) (2.3s)^{2} = 26 m[/tex]

where,

s: displacementu: initial speed (0 m/s)t: timea: acceleration due to gravity (9.8 m/s²)

A stone dropped from a 26 m bridge, takes 2.3 s to reach the water.

Learn more: https://brainly.com/question/14851168

What is the frequency of a wave that has a period of 5 seconds?
O A. 2 Hz
OB. 5 HZ
O C. 20 Hz
O D. 0.2 Hz

Answers

Answer: D

Explanation:

The frequency of a wave that has a period of 5 seconds is 0.2 Hz. Thus, the correct option is D.

What is Frequency?

Frequency of a wave is the number of occurrences of a repeating event per unit of the time. Frequency is also occasionally referred to as the temporal frequency for clarity purpose, and it is distinct from that of angular frequency. Frequency is measured in SI units of hertz which is equal to one event per second of the time.

Frequency can be calculated as the number of waves that pass a fixed place in a given amount of time period. The frequency of a wave that has a period of 5 seconds is:

f = 1/T

where, f = frequency,

T = Time taken

f = 1/ 5

f = 0.2 hertz

Thus, the frequency of the wave is 0.2 hertz.

Therefore, the correct option is D.

Learn more about Frequency here:

https://brainly.com/question/5102661

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How much work is done to move a 1,000 N car 20 meters?

Answers

Answer:

The answer is 20,000 J

Explanation:

The work done by an object can be found by using the formula

workdone = force × distance

From the question

force = 1,000 N

distance = 20 m

We have

workdone = 1000 × 20

We have the final answer as

20,000 J

Hope this helps you

. Explain What makes the rock cycle a cycle?
SC.7.E.6.2 hi how do you do this

Answers

The Rock cycle is a model that describes the formation degradation, and regeneration of rocks as a result of sedimentation magma, and metamorphism. All rocks are made of minerals.

Rock circulation is the process by which rocks change continuously between three types igneous sedimentary and metamorphic. The three processes that transform one rock into another are crystallization, metamorphism erosion, and sedimentation. Any rock can be transformed into another rock by undergoing one or more of these processes. This creates a lock cycle.

Rock circulation is a fundamental concept that describes the transition between three rock types metamorphic igneous, and sedimentary rocks. Simply put it is a set of processes that create and transform rock types within the Earth's crust. Rock cycling by definition is the natural process by which sedimentary igneous, and metamorphic rocks are formed, transformed from one type to another, and destroyed.

Learn more about The Rock cycle here:-https://brainly.com/question/12863450

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But, bless your heart! The armlet was ever so much too large for the king to wear. Nevertheless, he tied it to his wrist with a bit of ribbon, and off he marched to the princess's castle. A. The faithful servant allows the king to take the armlet away from him. B. The king injures the faithful servant while he is taking the armlet from him. C. The wise bird, who is kind to the faithful servant, is unkind to the king. D. The armlet, which was tight on the faithful servant, is loose on the king.