A wooden block slides on a rough horizontal table and collides with a block initially…
PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
A 0.50kg wooden block slides on a rough horizontal table and collides with a 0.30kg block initially at rest on the same surface. Friction acts between each block and the table throughout the interaction. Explain how you could redefine the system so that horizontal momentum is conserved during the collision, and state whether friction then counts as an internal or external force.