A toy car travels at a speed v1 colliding head on the a second toy car moving at speed v2 towards car 1.?

Question

They collide. After this the first car slows down to speed v1 not continuing in the same direction.

1. what is the speed of car 2 after collision?

2. what is the speed of the second car if the first car was travelling at initial speed 15ms-1 then changed to 1.8ms-1 after collision. and the initial speed of car 2 was 11ms-1. both have same mass 0.02kg.

3. Will the answer change if masses are doubled for both toy cars?

Answer 1

doesn`t matter what your theory are.....impact point and collision speed will always equal car 1 + car 2 `speed`.

impact point = v1(100kph) + v2(120kph)......220kph.

collision speed after impact point  +   Zero kph.(0)

deflection speed after collision/impact = lessens as per weight of each vehicle until Inertia dissolves.....= factors un-known as to actual direction/s of vehicles at Impact point.

answer won`t change , only distances from Impact point vary.