Question

A 5. 69x10^-2kg tennis ball moves at a speed of 13m/s. Then the ball is struck by a racket, causing it to rebound in the opposite direction at a speed of 18m/s. What is the change in the ball's momentum

Answer 1

Step-by-step explanation:

The change in an object's momentum is equal to the final momentum minus the initial momentum.

The momentum of an object is given by the product of its mass and velocity:

Initial momentum = mass * initial velocity

Final momentum = mass * final velocity

Given:

Mass of the tennis ball = 5.69x10^-2 kg

Initial velocity = 13 m/s

Final velocity = -18 m/s (opposite direction)

Let's calculate the initial momentum and final momentum:

Initial momentum = (5.69x10^-2 kg) * (13 m/s)

Final momentum = (5.69x10^-2 kg) * (-18 m/s)

Now, let's calculate the change in momentum:

Change in momentum = Final momentum - Initial momentum

Plugging in the values:

Change in momentum = [(5.69x10^-2 kg) * (-18 m/s)] - [(5.69x10^-2 kg) * (13 m/s)]

Performing the calculation will give you the change in the ball's momentum.

Hope I helped