Forces

What can forces do?

What is the unit of force?

What two objects interact, what can we say about the forces acting?

What is a resultant force?

What happens if the resultant force on an object is zero?

What happens if the resultant force on an object is not zero?

How do we calculate the resultant force when an object is acted on by two forces acting along the same line?

How does the acceleration of an object on the size of the resultant force?

What effect does the mass of the object have on its acceleration?

How do we calculate the resultant force on an object from its acceleration and its mass?

What forces oppose the driving force of a car?

What does the stopping distance of a vehicle depend on?

What factors can increase the stopping distance of a vehicle?

What is the difference between mass and weight?

What is terminal velocity?

How do we measure the extension of an object when it is stretched?

How does the extension of a spring vary with the force applied to it?

What is the spring constant of a spring?

How can the fuel economy of road vehicles be improved?

What is an average speed camera?