Question

Kevin is riding his skateboard. If he pushes off with a force of 60 N applied over 0.75 seconds, what impulse does he gain?

0.0125 Ns

3600 Ns

45 Ns

80 Ns

Answer 1

Impulse J = F·Δt = 60 N × 0.75 s = 45 N·s, so 45 Ns.