# This is just practice, but i still need help. Can someone explain?

If car A and car B have the same acceleration, but car B has three times the mass of car A, what must be true about car A and car B?

a. Car B must have an engine providing more force than car A to match its

acceleration

b. Car A must have an engine providing less force to slow down

c. Car B must be moving on a different course than car A

d. Car A cannot be moving at the same acceleration of Car B unless the masses change

## Car B must have an engine providing more force than car A to match its acceleration

not sure if this is right. trust me if you want to but sorry if I'm wrong

## I need help ASAP!

## F = ma

since B has greater mass, it must be using more force

## To explain the answer to this question, we need to understand the relationship between force, mass, and acceleration in Newton's second law of motion. According to this law, the force applied on an object is equal to its mass multiplied by its acceleration (F = ma).

In this scenario, car A and car B have the same acceleration, but car B has three times the mass of car A. This means that car B is exerting a greater force to achieve the same acceleration as car A.

Therefore, the correct answer is:

a. Car B must have an engine providing more force than car A to match its acceleration.

Option b is incorrect because car A does not need to provide less force to slow down. Option c is irrelevant since there is no mention of different courses. Option d is also incorrect because the masses of the cars do not need to change in order for them to have the same acceleration.