Newton's 1st Law: If there is no unbalanced force an object's motion will not change, a seatbelt prevents a person from continuing to move as a car comes to a sudden stop, a curling stone continues to move across ice until it hits the buffers, Friction causes a book to stop sliding across a table, Explains why a heavy shopping trolley is difficult to manoeuvre, Newton's 2nd Law: A car with small mass takes less force to stop than a car with larger mass, An empty trolley will accelerate more than a full one if the same force is applied, If the mass of a car is increased it will take longer to reach 50 km/h, It takes a ship travelling at 30 km/h 5 kilometers to come to a stop because it has so much mass, Relationship between unbalanced force, mass and acceleration, Newton's 3rd Law: All forces come in pairs, You move forwards when you push backwards, A rocket moves upwards as exhaust gases are pushed downwards, Action and Reaction forces, If you push against a wall with a force of 5N, the wall pushes you with a force of 5N,

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