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:

4joule

Explanation:

Answer 2

Explanation:

Mass=2kh

Initial velocity=4m/s

final velocity=8m/s

Time=2 seconds

Work done is Force × displacement

Force =MA

=2(V-U)/Time

2(1)=2m/s^2

workdone =∆Ke/Time

=mv^2/2

2*8/2/2

16 Joules

Answer is 16 Joules