1. A 0.250 kg baseball sits on the ledge of a window in Treadwell hall. If the ball has 18.5
1 answer:
Answer:
h = 7.54 m
t = 1.24 s
Explanation:
1.Let g = 9.81 m/s2 is the gravitational acceleration. Since the formula for potential energy is:
where m = 0.25 is the ball mass and h is the height. We can solve for h
2. The time it take for the ball to reach a distance of 7.54m with a gravitational acceleration of 9.81m/s2:
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Power is defined as the rate at which the body is doing work:
Work is defined as displacement done by the force times that displacement:
We know that we need 62N to move the box, so when we apply this force along the path of 10m we have done:
of work.
Now we just divide that by 5s to get how much power is required:
Work is defined as displacement done by the force times that displacement:
We know that we need 62N to move the box, so when we apply this force along the path of 10m we have done:
of work.
Now we just divide that by 5s to get how much power is required: