Answer:
his power is 7.35W
Explanation:
his power is 7.35 W, this is because power is work over time. Work can be the force by the distance of an object, to get the force, you have to multiple the mass by the acceleration due to gravity which on earth is constant which is 9.8m/s^2. With the information gotten we can start to write our equation.
power =work/time
time=20s
work= force*distance
force= mass*gravity=5kg*9.8m/s^2=49 N
distance= 3m
therefore work= 49N* 3m= 147J
Finally power= w/t= 147J/20s=7.35 W
