Question

a block of 2kg is moving on a straight line the velocity of block changes from 4 m/s to 8 m/s in 2 seconds. the work done by the net force acting on the block in 2 seconds is ...​

Answer 1

Answer:

Correct option is

B

4 N

From above figure

A→B

u = 4m/s v=0 t=2sec a=?

v=u+at

0=4+a(2)

a=−2m/s

2

so,

force = ma

=2×2=4N

Hence (B) is the correct answer

solution