Question

Suppose the ball is moving at 20° downward from the horizontal before it is kicked. If all the numerical values are the same as before, find the magnitude of the average force on the ball.

A) Cannot be determined
B) 0 N
C) 20 N
D) 40 N

Answer 1

The magnitude of the average force on the ball cannot be determined (A) in this scenario.

Step-by-step explanation:

To find the magnitude of the average force on the ball, we need to use the formula for impulse: impulse = change in momentum. In this case, the ball's initial momentum is given by the equation: momentum = mass x velocity. Since the ball is moving at an angle of 20° downward from the horizontal, we can find the horizontal and vertical components of its velocity using trigonometry. The horizontal component of the velocity is given by: v_x = velocity x cos(angle). So, v_x = 20 m/s x cos(20°). The vertical component of the velocity is given by: v_y = velocity x sin(angle). So, v_y = 20 m/s x sin(20°).

Next, we need to find the final momentum of the ball by multiplying the ball's mass with the final velocity. Since the velocity after being kicked is not given, we cannot determine the final momentum or the change in momentum.