S1 Forces

A Newton Balance is used to measure

• Speed

• Force

• Temperature

• Time

Force is measured in

• Degrees Celsius

• Seconds

• Newtons

• Metres per second

Mass is the...

• quantity of matter (stuff) something is made of

• same as weight

• force of gravity on an object

Weight is the...

• quantity of matter (stuff) something is made of

• same as mass

• force of gravity on an object

Balanced forces are...

• The same size in the same direction

• The same size in opposite directions

• Different sizes in the same direction

• Different sizes in opposite directions

Unbalanced forces are... (Tick all the right answers!)

• The same size in the same direction

• The same size in opposite directions

• Different sizes in the same direction

• Different sizes in opposite directions

Balanced forces will cause a stationary object to stay still, and a moving object to...

• Continue moving at the same speed

• Slow down

• Speed up

Unbalanced forces will cause an object to...

• Stay still

• Change speed and/or direction

The size and direction of the resultant force is

• 300 N to the right

• 700 N to the left

• 100 N to the right

• 100 N to the left

Friction is a force caused by two surfaces rubbing against each other. Friction __________ motion (movement).

• Opposes (slows down)

• Assists (speeds up)