P6 HW CHAPTER 3 AFFECT OF FORCES

In which of the following is frictional force useful to us?

• Holding a pen to write

• Soles of shoes wearing out

• Tread of tyres becoming worn out

• Moving a large box across a room

Ricky is hiking up Mount Rinjani. What are the two forces acting on him as he goes up the mountain?

• Muscular force and frictional force

• Electric force and gravitational force

• Gravitational force and frictional force

• Magnetic force and gravitational force

Which force causes our weight to change?

• Magnetic force

• Muscular force

• Frictional force

• Gravitational force

Which of the following does not involve gravitational force?

• The Earth orbiting the Sun

• Carrying out activities all day

• Keeping the gases in the atmosphere

• Keeping us from floating away into space

A block of wooden wood is given a force of 5 N to the left and 10 N to the right. In which direction would the wooden block move?

• To the left

• To the above

• To the right

• To the below

In a football game, the goalkeeper stops a moving ball to prevent it from entering the goal. What is the motion of the object?

• Make a moving object stop

• Make a moving object move slower

• Make a stationary object move

• Change the direction of a moving object

All objects fall onto the ground when they are released from a height. What does this tell us about gravity?

• Gravity is a force

• There is gravity on Earth.

• Gravity is the same everywhere.

• Gravity can change the colour of object

Which of the following is NOT an effect of a force?

• Changes the mass of an object

• Changes the colour of an object

• Changes the speed of an object

• Changes the direction of a moving object

An object that is not moving has no forces acting on it.

The mass and the weight of an object are the same.