A field gun of mass rests on the level ground where the coefficient of kinetic…
PHYSICS · Multi-part · AP · Physics 1: Algebra-based · Linear Momentum · Linear Momentum
Problem
A field gun of mass 20kg rests on the level ground where the coefficient of kinetic friction between the gun and the ground is unknown. It fires a 0.50kg shell horizontally with a speed of 400m s−1 relative to the ground. After firing, the gun slides backward and comes to rest after moving 0.80m.
(i) Determine the initial speed of the gun immediately after the shell leaves the barrel.
(ii) Using the information given, calculate the coefficient of kinetic friction between the gun and the ground.