Question

A body. Of masswith1ms-1collided

Answer 1

Answer:

F=−dU/dx

Thus F = 4 {x=1 to x=3.5}, -2{x=3.5 to x=4.5}

KE

i

=0,KE

f

=W

F

=∫

2

3.5

4dx−∫

3.5

4.5

2dx=4J

0.5(1)v

2

=4=>v=

8

=2

2

m/s