Question

A child playing with a football throws the ball vertically upwards in the air with an initial velocity of 20 m/s . (Assuming acceleration due to gravity as 10 m/s , what will be the acceleration of the ball in m/s^2 when it reaches the top of its trajectory

Answer 1

Given:

A child playing with a football throws the ball vertically upwards in the air with an initial velocity of 20 m/s.

To find:

Acceleration due to gravity when ball reaches top of trajectory.

Calculation:

Ball after reaching the maximum height (top of trajectory) , it still experiences the same acceleration due to gravity and the magnitude of the acceleration is equal to 10 m/s².

The Gravitational Acceleration is a vector with a magnitude of 10 m/s and acting radially downwards ;

It is due to this gravity that the ball momentarily stops at the maximum height after which the direction of velocity changes, becomes downwards and the ball again reaches back to the ground.

Hope It Helps.

Answer 2

answer is 20 fifudydtsyffdydydufuf