gYou throw a ball vertically upward so that it leaves the ground with velocity 5.40 m/s.(a) What is its velocity when it reaches its maximum altitude

Explanation:

Given

--- Initial velocity

Required

Determine the velocity at maximum altitude

When a ball or an object is thrown upward, it reaches a maximum height, then stops momentarily and then descends downwards

The sequence of the event is:

At the point where the object stops (i.e. the maximum altitude), the velocity is 0

Hence, the required velocity is:

if they have a finite resultant

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