Answer:
P = 200 [kW]
Explanation:
To solve this problem we must first find the acceleration developed, by means of the following kinematic equation.
[tex]v_{f}=v_{0}+a*t[/tex]
where:
vf = final velocity = 20 [m/s]
vo = initial velocity = 0
t = time = 3 [s]
[tex]a= \frac{v_{f}}{t}\\ a=\frac{20}{3} \\a= 6.66 [m/s^2][/tex]
Through newton's second law, which tells us that the sum of forces is equal to the product of mass by acceleration.
F = m*a
F = 1500*6.66
F = 10000[N]
The power can be calculated by multiplying the speed by the force.
P = F * v
P = 10000*20
P = 200000 [W] = 200 [kW]
