Question

The ball is projected up from ground with speed 30 m/sec. What is the average velocity for time
0 to 4 sec?
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Answer 1

Answer:

20m/s

Explanation:

Average velocity = final + initial/2

After 3 sec ball reached at maximum height then velocity of the ball is zero after then ball is coming back and velocity of the ball at 4 sec is 10m/s.

Average velocity =30+10/2

=20m/s