What average net force is required to stop a 4 kg bowling ball in 0.5 s if it’s initially traveling at 10 m/s?

-80 N

Explanation:

First of all, let's calculate the deceleration of the ball, which is given by:

where

v = 0 m/s is its final velocity

u = 10 m/s is its initial velocity

t = 0.5 s is the time taken

Substituting,

And now we can calculate the average net force required to stop the ball by using Newton's second law: in fact, the net force is equal to the product between the ball's mass (4 kg) and the acceleration, so:

Where the negative sign simply means that the force is in the opposite direction to the motion of the ball.

c because the action was the roller coaster reaches bottom of hill (action) reaction would be blood tends to drain away from head

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