If the velocity of a pitched ball has a magnitude of 47.5 m/s and the batted ball's velocity is 52.0 m/s in the opposite directi
on, find the magnitude of the change in momentum of the ball and of the impulse applied to it by the bat. Express your answer with the appropriate units.
1 answer:
You might be interested in
Answer:
The average power delivered by the elevator motor during this period is 6.686 kW.
Explanation:
Given;
mass of the elevator, m = 636 kg
initial speed of the elevator, u = 0
time of motion, t = 4.5 s
final speed of the elevator, v = 2.05 m/s
The upward force of the elevator is calculated as;
F = m(a + g)
where;
m is mass of the elevator
a is the constant acceleration of the elevator
g is acceleration due to gravity = 9.8 m/s²
F = (636)(0.456 + 9.8)
F = (636)(10.256)
F = 6522.816 N
The average power delivered by the elevator is calculated as;
Therefore, the average power delivered by the elevator motor during this period is 6.686 kW.