What is the impact speed when a car moving at 200 km/h bumps into the rear of an- other car traveling in the

I NEED HELP I CAN'T DO PHYSICS FOR MY LIFE

Since they are going in the same direction, the impact speed is:

200 km/h - 73 km/h = 127 km/h

We need help as well - the whole question please.

That 200 kph is 55.55 m/s and is so fast that a "bump" into anything is unlikely.... Smash will be the best word.

If the car in front is going at say " 25 m/s " then the impact speed is just 55.55 – 25 = 30.55 m/s

Any use.??

Nor can you see you typed the question into cyberspace. Please edit, use "now for a little more detail".