Question

How much work does gravity do on a 0.110 kg ball falling from a height of 20,9 m? (Neglect air resistance.)

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Answer 1

Below

Step-by-step explanation:

To find the work done by gravity on an object, you can use this formula:

Work = (mass)(gravity)(height)

We know that objects accelerate towards earth at a rate of 9.8 m/s^2 so....

Work = (0.11kg)(9.8m/s^2)(20.9m)

= 22.5302 J

For this question we need to round the final answer to 3 sig figs :

= 22.5

Therefore, the work done on the ball by gravity is 22.5 Joules

Hope this helps! Best of luck <3

Answer 2

Step-by-step explanation:

Work = F * d

m = 110 kg

a = 9.8 (acceleration due to gravity).

d = 20.9 m

F = m * a

F = 110 * 9.8

F = 1078 Newtons

Work = 1078 N * 20.9 m

Work = 10564.4 Joules