The velocity of a ball as it is thrown up is 20 meters/second. it attains zero velocity after 3.5 seconds. what is the average acceleration of the ball during its upward flight?

Explanation:

It is given that, the velocity of a ball as it is thrown up is 20 meters/second. It attains zero velocity after 3.5 seconds.

i.e. The initial velocity of the ball is, u = 20 m/s

Final velocity of the ball is, v =0

Time taken, t =3.5 s

The rate of change of velocity w.r.t time is called the acceleration of the ball.

So,

Hence, the average acceleration of the ball during its upward flight is .

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