Let's solve the problems step by step.
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Q.2. Fill in the blanks with suitable words.
a) A ________ is a push or a pull that acts on an object.
✔ Answer: *Force*
Explanation: A force is any interaction that can change the motion of an object, and it can be either a push or a pull.
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b) The amount of force is measured in ________.
✔ Answer: *Newtons (N)*
Explanation: The standard unit of force in the International System of Units (SI) is the newton (N). One newton is the force required to accelerate a mass of one kilogram at a rate of one meter per second squared.
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c) ________ is a force that opposes the motion of an object.
✔ Answer: *Friction*
Explanation: Friction is a resistive force that acts between two surfaces in contact, opposing the relative motion or tendency of motion between them.
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Q.3. Label the types of friction.
We are given four images and need to match each with the correct type of friction.
Let’s analyze each image:
1.
First image: A person skiing on snow.
- The skis are sliding over snow. This involves
sliding motion.
✔ Type: *Sliding Friction*
2.
Second image: A person riding a bicycle.
- The wheels are rolling on the ground.
✔ Type: *Rolling Friction*
3.
Third image: A person swimming in water.
- The swimmer moves through a fluid (water), experiencing resistance.
✔ Type: *Fluid Friction*
4.
Fourth image: A child pushing a door, but it doesn't move.
- There is no motion, so this is
static friction, which prevents motion from starting.
✔ Type: *Static Friction*
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Final Answer for Q.3:
From top to bottom:
1.
Sliding Friction → Skiing
2.
Rolling Friction → Bicycle
3.
Fluid Friction → Swimming
4.
Static Friction → Door not moving
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✔ Complete Answers:
####
Q.2
a) A
force is a push or a pull that acts on an object.
b) The amount of force is measured in
newtons (N).
c)
Friction is a force that opposes the motion of an object.
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Q.3
- Top:
Sliding Friction
- Second:
Rolling Friction
- Third:
Fluid Friction
- Bottom:
Static Friction
Let me know if you'd like a diagram version!
Parent Tip: Review the logic above to help your child master the concept of friction worksheet pdf.
