Question

Explain how helmet shape changes both the force and the acceleration on a skater's head as the skater hits the wall of the rink, using the formula F=ma?

A) The force increases with a narrower helmet, causing greater acceleration.
B) The force decreases with a flatter helmet, causing slower acceleration.
C) The force increases with a rounder helmet, causing slower acceleration.
D) The force decreases with a bulkier helmet, causing greater acceleration.

Answer 1

The force and acceleration on a skater's head when hitting the wall of the rink are affected by the shape of the helmet. A rounder helmet increases the force and decreases the acceleration.

Step-by-step explanation:

When a skater hits the wall of the rink, the shape of their helmet can affect both the force and the acceleration. According to the formula F=ma, the force is directly proportional to the mass and acceleration. Therefore, option A is incorrect because a narrower helmet would lead to a smaller force as the mass remains constant. Option B is also incorrect because a flatter helmet would not affect the force. Option C is correct because a rounder helmet would increase the force and decrease the acceleration. Option D is incorrect because a bulkier helmet would increase the force and decrease the acceleration.