Question

A car of mass 1000kg travelling at 32m/s dashes into the rear of a truck of mass
8000kg moving in the same direction with a velocity of 4m/s. After the collision, the
car bounces with a velocity of 8m/s. What is the velocity of truck after the impact?

Answer 1

Answer:

the velocity of truck after the impact

$= \frac{(8000 - 1000) \times 4 + 2 \times 1000 \times 32}{8000 + 1000} m.s {}^{ - 1} \\ = \frac{28000 + 64000}{9000} m.s {}^{ - 1} \\ = \frac{92000}{9000} m.s {}^{ - 1} \\ = 10.222m.s {}^{ - 1}$