A mallet of mass 1.2 kg1.2\text{ kg}1.2 kg is used to hit a tent peg into the ground. Just before it hits the peg, the mallet is travelling downwards with a velocity of 4.5 m/s4.5\text{ m/s}4.5 m/s.
State the relationship between momentum, mass, and velocity.
Calculate the momentum of the mallet just before it hits the peg. State the unit.
The mallet comes to a complete stop in 0.040 s0.040\text{ s}0.040 s after striking the peg. Calculate the average force that causes this change in momentum.
As the tent peg enters the ground, the peg exerts a force on the ground. At the same time, the ground exerts a force on the peg. Explain how these two forces are related.
A tent peg has a wide, flat head at one end (where it is hit by the mallet) and a sharp, pointed tip at the other end (which enters the ground). Explain why the peg exerts a much greater pressure on the ground than it does on the mallet.
