- #1
Dolan
- 7
- 0
Homework Statement
A railway locomotive pushed a stationary wagon to accelerate it to a speed of 4.00 m s-1. The engine then applies an equivalent force over the same time on a second wagon to accelerate it from rest to a speed of 6.00 ms-1. The second wagon rolls down the track, collides with the first, and the two lock together. The loco must now push the two stationary wagons to the other end of the shunting yard. What speed could the two railway carriages achieve if the loco applies the same impulse?
Answer is 4.8ms-1, however I'm not sure how they got it. (answerbook)
Homework Equations
F=ma
The Attempt at a Solution
If F is constant between both equations and you are given A, that means M must change
so
6= F/M1
4=F/M2