Physics P2 2.2

Most objects around you are acted on by more than one force. We can work out the effect of the forces on an object by replacing them with a single force, the resulting force. This is a single force that has the same effect as all the forces acting on the object. 

When the resultant force on an object is zero, the object: 

• remains stationary, or
• continues to move at the same speed it was already moving.

When the resultant force on object is not zero:

• the movement of the object depends on the size and direction of the resultant force. 

When a jet plane is taking off, the thrust force of…