Two spheres of different masses, m1 m_1\,m1 and m2m_2m2 (where m1>m2m_1 > m_2m1>m2), are released from rest at the same height inside a vacuum chamber. What will happen and why?
Both spheres reach the bottom at the same time — Acceleration due to gravity is independent of mass
Both spheres reach the bottom at the same time — Both spheres fall at the same constant speed throughout
The sphere of mass m1m_1m1 reaches the bottom first — The gravitational force on m1m_1m1 is greater
The sphere of mass m1m_1m1 reaches the bottom first — The acceleration of m1m_1m1 is greater because of its larger mass
204 exam-style questions on CIE IGCSE Physics Motion, covering Motion. Each one has a worked solution and a mark scheme showing where the marks go.