Question 1: Which force is being applied by a vendor when he is pushing the pushcart?
Answer: (a) Muscular force
Question 2: What will happen to the speed of a car when the driver applies brakes?
Answer: (b) Speed decreases
Question 3: Which force always opposes motion?
Answer: (c) Friction
Question 4: When your friend pushes your bike from behind, what will happen to the speed of the bike?
Answer: (b) Speed increases
Question 5: Which of the following possess gravitation?
Answer: (d) All of the above
Question 6: How much weight of air is always over your head?
Answer: (a) 1000 kg
Question 7: Which force causes a charged balloon to attract another balloon?
Answer: (b) Electrostatic force
Question 8: A dropper to fill ink works because of which of the following?
Answer: (c) Air pressure
Question 9: What is the SI unit of force?
Answer: (a) Newton
Question 10: Which animal can easily walk in desert?
Answer: (d) Camel
Question 1: What is force?
Answer: A push or pull on an object is called force.
Question 2: What is a contact force?
Answer: Contact force is a force which can produce its effect only by making a contact with object.
Question 3: What is a non-contact force?
Answer: The non-contact force is a force which can produce its effect without making a contact with object.
Question 4: What is muscular force?
Answer: It is the force applied by muscles of humans or animals.
Question 5: What is friction?
Answer: When one surface is moving over another surface, a force comes into play and opposes their relative motion. This force is called friction or force of friction.
Question 6: What is magnetic force?
Answer: The force applied by a magnet is called magnetic force.
Question 7: What is electrostatic force?
Answer: It is the force applied by a charged body on another charged or non-charged body.
Question 8: What is gravitational force?
Answer: Gravitational force is the force which is exerted by every object in the universe.
Question 9: What is pressure?
Answer: The force acting on a unit area on an object is called pressure.
Question 10: What is atmospheric pressure?
Answer: The pressure exerted by atmospheric air is called atmospheric pressure.
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