Chapter 6

A ___________ is a push or pull

Which of these is an applied force?

• gravity

• friction

• lifting

• magnetic force

Answer explanation

applied force is a type of force that is exerted by one object/hand on another object.

Push, pull, lift, twist, squeeze is example of applied force

One of these force is not involved in this game.

• gravitational force

• frictional force

• magnetic force

• applied force

One of these is contact force.

• Gravitational force

• Frictional force

• Magnetic force

Friction always oppose movement. Identify where is the force applied and the friction

• Red - Friction

  Blue - Force

• Red - Force

  Blue - Friction

Force can be measured using spring balance and the unit is

When a force is used to move an object in the direction of the force, this is called

The formula for calculating work done is

• W= F x d

• W = F x a

• W = F / d

• W = F / a

A T shaped object is placed in 4 different position on the table. Which will exert a greater pressure?

• 
• 
• 
• 

Answer explanation

Pressure greatly depend on the area. The smaller the area of contact, the greater the pessure

This powerful car stuck in the mud compare to a bulldozer because

• the car has large area of contact with the ground

• the car is lighter than the bulldozer

• the bulldozer has large area of contact with the ground

• the bulldozer is lighter than the car

Answer explanation

Bulldozer has a track roller instead of wheels. This increase the surface area of contact with the ground thus make the pressure smaller and prevent it from sink to the ground easily.