The formula for power is ( P = W / t ) or ( P = m × a × d / t ) or ( P = F × d / t)
The gravitational acceleration on Earth is 9.8 m/s².
Given Data:
m ( mass ) = 30 kg
a ( acceleration ) = 9.8 m/s²
d ( distance ) = 0.2 m
t ( time ) = 2 s
P ( Power ) = ? unknown
Solution:
We can use the formula of power which is ( P =m × a × d / t ) in order to solve the problem.
P =m × a × d / t
= 30 kg × 9.8 m/s² × 6 m / 4 s
= 1764 kg·m²/s² / 4 s
= 441 J / s
= 441 Watts
Answer:
D. 441 W