Question

A golf ball of mass 100 g at rest is hit with a striker. Find the impulse of the hit if the ball stops after travelling a horizontal distance of 100 m with uniform retardation of 5 m/s²?

Options

• 0.3 Ns

• 0.1 Ns

• 3.16 Ns

• 0.9 Ns

Answer 1

3.16 Ns

Explanation:

v² − u² = 2as

0 − u² = 2 × −5 × 100

−u² = −2 × 500

⇒ u = `sqrt1000`

⇒ u = 31.6 m/s

Impulse = change in momentum

= m(v − u)

= 0.1(0 − 31.6)

= −3.16 Ns