Question

1. When a toothpaste is squeezed, it's shape changes. The force responsible for this is.
a) balanced force b) centripetal force c) unbalanced force d) centrifugal force.
2. The inertia of an object tends to cause an object
a) to increase its speed b) to resist a change in its state of motion c) to decrease its speed d) to decelerate due to friction.
3. The inertia of a moving object depends on:
a) momentum of the object b) mass of te object c) speed of the object d) shape of its object.
4. When we talk of force acting on a body, it usually means
a) balanced force b) unbalanced force c) frictional force d) nuclear force.
5. On a top of a glass tumbler a square card is kept and on top of the card a coin is placed. N flicking the card moves away but coun drops into the tumbler. State the law of motion used:
a) Newton's third law b) Newton's first law c) newtons law of gravitation d) Newton's second law.
6. The rocket works on the principle of conservation of:
a) mass b) energy c) momentum d) velocity.
7. An object of mass 2 kg is sliding with a constant velocity of 4 m/s on a frictionless horizontal table. The force requires to keep this object moving with the same velocity is:
a) 32N b) 0N c) 2N d) 8N
8. The unit of momentum of a moving body is:
a) ms-1 b) kg.ms-1 c)kg.ms-2 d)Nm2kg-2
9. A body of mass 50kg standing on ground exerts a force of 500N on the ground. The force exerted by the ground on the body will be: a) 50N b) 25000N c) 10N d)500N.
10. 4 vehicles of masses 1150 kg, 720kg, 600kg and 2510 kg are moving at the same speed of 50 m/s under move, the maximum acceleration will be produced in:
a) 1150 kg b) 720kg c) 600kg d) 2510kg.
11. Acceleration produced by a force of 5 N acting on a mass of 20 kg in m/s2 is:
a)4 b)100 c)0.25 d)2.5.
12. A fielder pulls his hand backwards after catching the cricket ball. This enables the fielder to:
a) exert large force on the ball b) reduce the force exterted by the ball c) increase the rate of changes of momentum d) keep the ball in hands firmly.
13. According to third law of motion, action and reaction:
a) always act on the same body but in opposite direction b) always act on the different bodies in opposite direction.
14. Which of the following situations involves the Newton's second law of motion:
a) a force can stop lighter vehicle as well as heavier vehicle which is moving b) a force can accelerate a lighter vehicle more easily than a heavier vehicle which is moving.

Answer 1

1.(c) unbalanced force
2.(b)to resist a charge in state of its motion
3.(c) speed of the object
4.(a) balanced force
5.(b) newton's first law
6.(c) linear momentum
7.(b) 0N
8.(b)
9.(d)
10.may be a
11.(d)
12.(d)
13.(a)
10.may be a
Hope it helps you ☺️

Answer 2

1.c) unbalanced force
2.b) to resist a change in its state of motion
3.c)
5.b) newtons first law
6.c)
7.b)
8.b)