Force and Pressure 8 Assignment 03
Answers are at the end.
Multiple Choice Questions (MCQs)
1.
Which of the following is a property of force?
- A) It has only magnitude
- B) It has only direction
- C) It has both magnitude and direction
- D) It has neither magnitude nor direction
2.
A hockey player flicks a ball to change its direction. What does this action demonstrate?
- A) Force can only increase speed
- B) Force can change the direction of motion
- C) Force can only stop an object
- D) Force cannot affect a moving object
3.
What type of force is responsible for a coin falling to the ground when dropped?
- A) Muscular force
- B) Friction
- C) Gravitational force
- D) Electrostatic force
4.
Two students push a table in the same direction, making it easier to move. What happens to the forces?
- A) They cancel each other out
- B) They add up
- C) They oppose each other
- D) They reduce the table’s weight
5.
Which activity shows that force can change the shape of an object?
- A) Kicking a football
- B) Pressing a lump of dough
- C) Pulling a rope in tug-of-war
- D) Pushing a bicycle
6.
In Activity 8.6, a magnet on rollers moves when another magnet is brought near it without touching. What does this indicate?
- A) Forces require contact to act
- B) Magnetic force is a contact force
- C) Magnetic force is a non-contact force
- D) Magnets only push objects
7.
The force that opposes the motion of a moving object, such as a bicycle slowing down, is called:
- A) Gravity
- B) Friction
- C) Magnetic force
- D) Pressure
8.
A sharp knife cuts vegetables more easily than a blunt one. Why?
- A) The sharp knife applies less force
- B) The sharp knife has a smaller area, increasing pressure
- C) The blunt knife has more friction
- D) The sharp knife reduces the weight of the vegetables
9.
What is the effect of atmospheric pressure demonstrated by in Activity 8.11?
- A) It pulls objects upward
- B) It makes a rubber sucker stick to a surface
- C) It increases the speed of objects
- D) It changes the shape of liquids
10.
A spring on a bicycle seat compresses when someone sits on it. What does this show about force?
- A) Force can only change motion
- B) Force can change the shape of an object
- C) Force requires no contact
- D) Force only acts in one direction
Answers:
- C) It has both magnitude and direction
- B) Force can change the direction of motion
- C) Gravitational force
- B) They add up
- B) Pressing a lump of dough
- C) Magnetic force is a non-contact force
- B) Friction
- B) The sharp knife has a smaller area, increasing pressure
- B) It makes a rubber sucker stick to a surface
- B) Force can change the shape of an object
