A1055-kg van, stopped at a traffic light, is hit directly in the rear by a 715-kg car traveling with a velocity of +2.25 m/s. assume the transmission of the van is in neutral, the brakes are not being applied, and the collision is elastic. what is the final velocity of (a) the car (b)the van?

(a). The final velocity of the car is -0.432 m/s.

(b). The final velocity of the van is 1.82 m/s.

Explanation:

Given that,

Mass of van = 1055 kg

Mass of car = 715 kg

Initial velocity of car= 2.25 m/s

(a). We need to calculate the final velocity of the car

Using formula of velocity

Put the value into the formula

(b). We need to calculate the final velocity of the van

Using formula of velocity

Put the value into the formula

Hence, (a). The final velocity of the car is -0.432 m/s.

(b). The final velocity of the van is 1.82 m/s.