Question

A man pushing the body of force 15 newton and it is displaced 5m with a time of 5second find power ?​

Answer 1

Explanation:

Mass=40kg,v=1m/s,v=2m/s

• According to the work-energy conversion theorem;

• Work done by the force= Change in Kinetic energy,

Work done by the force =( 1/2 )×m×(v ^2-u^2)

Work done =0.5×40×(4−1)=60J

Answer 2

Explanation:

work done = force*displacement

= 15*5

= 75 Joules

Now ,

Power = energy consumed / time taken

= 75/5

= 15 watt