Physics, asked by brahmendra79, 8 months ago

if a ball projected vertically upward 8 meters then find the work done by gravity

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Answered by poonammudgil78

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The equation is given as v

−u

=2as.

where,

v = final velocity,

u = initial velocity,

a = acceleration due to gravity, 10m/s

s = h = height traveled.

Therefore, we can find u with above info. In this case, v = 0 at the top of the path.

0−u

=2×10×5=10m/s.

Hence, the initial velocity of the ball was 10 m/s.

Answered by Akashisbrainliest

Answer:

-73.8m N

Explanation:

Let mass of ball=m

work done=potential energy=mgh

=>m×-9.8×8

=-73.8m N

since ball is travelling opposite to the gravity thus 'g' is taken negative

= -73.8m N

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-73.8m N

if a ball projected vertically upward 8 meters then find the work done by gravity