Question

When a soccer ball with a mass of 0.43kg is kicked by a player, the ball can accelerate 25 m/s² off the player's foot. If resisting forces are ignored, such as friction and air resistance, how many Newtons of force did the player use when kicking the ball?

Answer 1

To calculate the force used by the player when kicking the ball, we can use Newton's second law of motion, which states that force equals mass times acceleration.

Given:
Mass (m) = 0.43 kg
Acceleration (a) = 25 m/s²

Using the formula:

Force (F) = mass (m) × acceleration (a)
F = 0.43 kg × 25 m/s²
F = 10.75 N

Therefore, the player used 10.75 Newtons of force when kicking the ball.