A 1055-kg van, stopped at a traffic light, is hit directly in the rear by a 660-kg car traveling with a velocity of 2.00 m/s. Assume that 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 each vehicle

Explanation:

According to law of conservation of energy

m1u1 + m2 u2 = (m1+m2)v

m1 and m2 are the masses of the bodies

u1 and u2 are the initial velocities

v is the final velocity after collision

Substitute the given values into the formula

1055(0) + 660(2) = (1055+660)v

0+1320 = 1715v

v = 1320/1715

v = 0.77m/s

Hence the final velocity of each vehicle is 0.77m/s

increasing transnational kinetic energy. because the transnational kinetic energy formula consists of only two variables, mass and velocity, increasing one of those properties is the only way to increase an object's transnational kinetic energy. increases to mass and velocity, however, do not have the same impact.