Question

a ball of mass 150 g falls from a height of 10m and instantly comes to rest . calculate the amount of momentum imparted to ground

Answer 1

v=√(2*a*s)=√(2*9.8*10)=14 m/s momentum=m*v
=0.150*14=2.1 kg m/s

Answer 2

Answer:

formula:

v² = u² + 2gs

v² = 0² + 2 * 9.8 * 10

v² = 196

v = 14 m/sec

momentum = m*v

mass = 150g = 0.15kg

momentum = 0.15 * 14

momentum = 2.1 kg-m/sec.

Explanation:

• for calculating momentum we required velocity.
• we calculated velocity by using formula v² = u² + 2gs.
• as, mass was given then we simply found the momentum.