Question

A 100 kg block is kept at the back of a truck moving with an acceleration of 2 ms. There
is no relative motion. What is the work done by frictional force on the block as truck is
displaced by 2 m wr.t., Ground​

Answer 1

Answer:

Hello mate

Explanation:

Frictional force acting on block = ma =100×2=200N  

work done by  friction =F×Displacement=200×2=400J  

here  work is positive..

hope this helps u