FORCES

Force is a vector quantity because it has both __________ and direction

What's the right way to express the magnitude of a force?

• 
• 

The SI UNIT of the physical quantity FORCE is....(write the unit and the symbol)

When a force is exerted on an object, it can change the object’s: speed, direction of_________________ and the shape

When a force is applied to a spring, it stretches. The __________ the force applied, the longer the spring stretches.

The symbol of the unit Newton is (a)  

• Nw
• Nt
• N
• Nw.

When representing a force, you must draw an ___________ over the symbol of the force.

Whenever an object moves against another object, it feels ________________ force. This force acts in opposite direction to the movement. This force is much smaller on smooth surfaces that on rough surfaces.

Elastic materials and objects such as springs, change ______________ when a force is exerted on them.

A change in shape is called _______________