So Ke1i = .5(1)(2^2) =2
Ke2i = 0
KeTotal = 2
Ke1f = .5(1)(-1^2) = 0.5
So Ke2f must = 1.5
KeTotal = 2
Ke1f+Ke2f = 2
.5 + (mv^2)/2 = 2
mv^2 = 3
Then compare MV = 3 and MV^2 = 3? So MV^2 = MV
Which means V must be 1m/s and M must be 3 Kg?
Homework Statement
A 1 Kg car moving at 2m/s collides elastically with a stationary car. The first car rebounds opposite to the original direction at 1m/s and the second car moves off in the original direction of the first car.
A) What is the mass of the 2nd car
B) What is the speed of...