An ice skater, initially at rest on frictionless ice, throws a heavy backpack horizontally forwards.
What is the resulting motion of the ice skater?
The ice skater moves backwards with a speed greater than the backpack.
The ice skater moves backwards with a speed less than the backpack.
The ice skater moves forwards with a speed greater than the backpack.
The ice skater moves forwards with a speed less than the backpack.
78 exam-style questions on CIE IGCSE Physics Momentum, covering Momentum. Each one has a worked solution and a mark scheme showing where the marks go.