Physics

To calculate the average power delivered by gravity, we need to follow these steps:

 

Determine the velocity of the ball after 1.5 seconds

The ball is thrown vertically upwards with an initial velocity of 20 m/s. The velocity after a certain time can be calculated using the equation:

where:

(initial velocity),

(acceleration due to gravity),

.

 

Substitute the values:

After 1.5 seconds, the velocity of the ball is 5 m/s.

 

Calculate the gravitational force

The gravitational force acting on the ball is given by:

where:

(mass of the ball),

(acceleration due to gravity).

 

Substitute the values:

 

Calculate the average power delivered by gravity

The average power delivered by gravity over a time interval is given by:

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