A boy climbs up a hill, which rises 1 in every 25, on his bicycle. The mass of the boy and his bicycle is 120 kg. What is the power applied by the body if he is cycling at the rate of 6 km/h hour? (Assume the friction is absent and `g=10m//s^(2)`)

Options

A. 80 watt
B. 70 watt
C. 100 watt
D. 120 watt

Answer

A

Explanation

Power `=("Work")/("Time")="Force" xx("Displacement")/("Time")`
`=F(dx)/(dt)=Fv =` Force `xx` velocity