Question

a force of 14 newton is applied on a solid mass 7 kg for 5 sec find the velocity acquired by the sphere and its change in momentum​

Answer 1

Answer:

change in momentum,∆p = 70 kgm/s

velocity, v = 10 m/s

Explanation:

Here, F = 14 N, m = 7kg, t = 5 sec.

F = ∆p /∆t

so, ∆p = F. ∆t = 14 × 5 = 70 kgm/s

∆p = m ∆v

so, ∆v = ∆p/ m = 70/ 7 = 10 m/s