Isaac Newton’s Laws of Motion describe how forces change the motion of an object, how the force of gravity gives weight to all masses, how forces cause acceleration and how forces work in collisions.

What is the weight of a person on the Earth?

What is the weight of a person on the moon where

What is the unbalanced force acting a on a rocket if its weight is and the thrust of its engines is ?

The cyclist and bicycle have a combined mass of and accelerate forwards at . Calculate the size of the unbalanced force producing this acceleration.

Two forces act on a parachutist during a drop. One force is the weight of the parachutist. The other force is the upwards pull from the parachute harness on the parachutist. The parachutist has a mass of . What is the acceleration of the parachutist?

A shopping trolley and its contents have a mass of . The trolley is pushed with a force . The friction force acting on the trolley is . The acceleration of the trolley is in the forward direction. What is the size of the unbalanced force acting on the trolley?

A shopping trolley and its contents have a mass of . The trolley is pushed with a force . The friction force acting on the trolley is . The acceleration of the trolley is in the forward direction. What is the size of force ?

A force and a force act on a crate at right angles, as shown in the diagram.

What is the magnitude of the resultant force?

What is the direction of the resultant force?

above the horizontal