Two cars are moving in the same direction in parallel lanes along a highway. at some instant, the velocity of car a exceeds the velocity of car b. does that mean that the acceleration of car a is greater than that of car b? explain.

Yes the acceleration of car A is greater than that of car B

Explanation:

Acceleration= Rate of change of velocity

If both cars are moving with the same velocity the acceleration would be zero because neither the velocity nor the direction is changing. if the velocity of the car A changes then there would be some acceleration and hence it will be greater than zero or greater than the acceleration of car B.

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.

wavelength divides in half and speed stays the same.