Physics revision for exam by ym

When forces are equal in size and opposite in direction, they are:

• Unbalanced

• Constant

• Balanced

• Zero

Balanced forces cause:

• Change in movement

• No change in movement

• Acceleration

• Decrease in speed

When forces are unbalanced, an object will:

• Stay at rest

• Move at a constant speed

• Change speed or direction

• Shrink in size

What is a force that resists motion?

• Gravity

• Friction

• Acceleration

• Decrease in speed

Which of the following is not an example of a force?

• Gravity

• Friction

• Speed

• Air resistance

If an object's motion changed, the forces acting on it must be:

• Balanced

• Unbalanced

• Zero

• Perpendicular

An object at rest will stay at rest unless acted upon by an external force. This is

• Newton's first law

• Newton's second law

• Newton's third law

• The law of gravity

A larger forced applied to an object will cause:

• Smaller acceleration

• No movement

• Greater acceleration

• Decreased inertia

If two forced act in opposite directions, you find the resultant force by:

• Multiplying them

• Dividing them

• Adding them

• Subtracting them

If an object is moving in a straight line at a constant speed, the forced on it must be:

• Balanced

• Unbalanced

• Zero

• Constantly changing