A tennis player hits a ball vertically upwards. After the ball leaves the racket, it is moving upwards. Air resistance is negligible.
How should the net force on the ball be described while it is moving upwards?
downwards and constant
downwards and decreasing
upwards and constant
upwards and decreasing
245 exam-style questions on CIE IGCSE Physics 1.5 Forces, covering 1.5.1a Forces, resultant force and motion, 1.5.1b Load–extension graphs and the spring constant, 1.5.1c Friction and drag, 1.5.1d Force, mass and acceleration, 1.5.1e Motion in a circular path, 1.5.2a Moment of a force, 1.5.2b Principle of moments and equilibrium, and 1.5.3 Centre of gravity and stability. Each one has a worked solution and a mark scheme showing where the marks go.