Question

What is power? show that power= force * velocity? calculate the power of a body os mass 10 kg accelerating with 10m/s2 acquires a velocity of 5m/s

Answer 1

Power is the rate of doing work. This gives us the relation:
P=W/t
P=F×d/t
P=F×v
F=m×a=10×10=100N
v=5m/s
p=f×v=100×5=500W