A red car of mass 1400kg collides with stationary blue car of equal mass They stick together and move - Physics - Laws of Motion and Gravitation

Question

A red car of mass 1400kg collides with stationary blue car of equal
mass They stick together and move with velocity of 11 m/s What is
intial velocity?

Vipra Mishra · Accepted Answer

Dear Student

Since the momentum before and after collision remains conserved
Thus
Total initial momentum = total final momentum(mrur) +(mbub)=mr+mbvAs mass of red car and blue car is same and blue car is stationary(m ur) +(m×0)=m+mv1400ur=2(1400) (11)ur=22 m/s

Regards

A red car of mass 1400kg collides with stationary blue car of equal mass. They stick together and move with velocity of 11 m/s. What is intial velocity?