Where does the force come from when a bumper car changes speed?

Answer:

Newton's second law

Explanation:

The rate of change of momentum of an object is equal to the net force acting on it. When bumper cars collide they push on each other. These pushes cause the momentum of each car to change.

The engine............

Which description of salt is a physical property?
A. No combustion
B. Makes ionic bonds
C. Product of mixing acids and bases
D. Solid does not conduct electricity

Which two models would be most useful in predicting weather?
A. A mathematical model based on data
B. A plastic model of a cloud
C. A map that shows wind patterns
D. A peach used to represent Earth

You are looking at two samples of iron. One sample is very small and came from the red soil on the planet Mars. The other sample is very large and came from Earth's core. True or False, these two samples contain different atoms

Now, demonstrate a net force of 300 N to the right. How many ways can you do it?

What is the chemical symbol for table salt?

A group of people take a diet pill. After 3 months, they measure the amount of weight they lost.
A :Independent Variable:
B: Dependent Variable:

Please help me identify the element. The picture is blurry so..

What element is this? Ignore my answer choice.

I need help ASAP! 10 points!

Which statement correctly describes the location and charge of a proton in an atom? A. The protons are inside the nucleus with a negative charge. B. The protons are inside the nucleus with a positive charge C. The protons are outside the nucleus with a negative charge. D. The protons are outside the nucleus with a positive charge.

In the early 1900s many scientists thought that an atom consisted of a positive substance with negative charges scattered throughout the substance. Then Ernest Rutherford made a discovery that led to the understanding that an atom consists mostly of empty space with- * 20 points A. protons orbiting a dense nucleus made of electrons and neutrons B. Neutrons and protons orbiting a cloud of electrons C. Electrons and protons orbiting a cloud of neutrons D. Electrons orbiting a dense nucleus made of protons and neutrons

CO2(g) + NH3(g) + H2O(l) → NH4HCO3(s) witch type of reaction plzz within 1 hour

As the toy car rolls away, it slows down. Why?

Which statement is true about the model of the atom below? * 20 points Captionless Image A. Positively charged particles are found outside the center of the atom. B. Negatively and positively charged particles are found in the center of the atom. C. Neutral and positively charged particles are found in the center of the atom. D. Neutral particles are found outside the center of the atom.

Which subatomic particles change the mass number? (select all that apply) Protons Neutrons Electrons

235
92
U +
1
0
n →
90
36
Kr +
A
56
Ba + 3
1
0
n

A student combined equal amounts of two solutions. One solution had a pH of 2 and the other had a pH of 12. Which would most likely be the resulting pH? 1 3 6 11

How were the novae on Venus similar to the landforms in Gerya’s computer model?

The data table shows the number of pumpkin seeds that germinate at different temperatures. What is the median number of seeds that germinate at 32ºC?
A. 64
B. 65.5
C. 65
D. 66