Christine is a free-fall parachutist

The diagram shows a man pulling a child on a sledge.The acceleration of the sledge is 1.5 m/s2. The mass of the child and sledge is 38 kg. Calculate the force needed to produce this acceleration.

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The diagram shows the horizontal forces acting on the water skier. calculate the resultant force and its direction

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The graph shows how the speed of a van changes with time for part of its journey. In which labelled section is the van decelerating?

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draw a free body diagram of a water skier being pulled along by a boat.

State the relationship between acceleration, velocity and time.

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A train begins a journey from a station and travels 60 km in a time of 20 minutes. What is the average speed of the train? A 3.0 m / s B 5.0 m / s C 50 m / s D 60 m / s

What force is on water drops which have just left the tank

State the equation linking force, mass and acceleration.