StudentAidUnit 3: Dynamics — Mcqs
9th Class Physics · Unit 3: Dynamics
0 of 0 answered
0 correct
Multiple Choice Questions (Exercise)
1.When we kick a stone, we get hurt. This is due to:
2.An object will continue its motion with constant acceleration until:
3.Which of the following is a non-contact force?
4.A ball with initial momentum p hits a solid wall and bounces back with the same velocity. Its momentum p' after collision will be:
5.A particle of mass m moving with a velocity v collides with another particle of the same mass at rest. The velocity of the first particle after collision is:
6.Conservation of linear momentum is equivalent to:
7.An object with a mass 5 kg moves at constant velocity of 10 ms^-1. A constant force then acts for 5 seconds on the object and gives it a velocity of 2 ms^-1. In the opposite direction. The force acting on the objects is:
8.A large force acts on an object for a very short interval of time. In the case, it is easy to determine:
9.A lubricant is usually introduced between two surfaces to decrease friction. The lubricant:
SLO based Additional MCQs
1.Inertia of a body is related to which of the following quantities:
2.When a hanging carpet is beaten by stick. Dust flies off the carpet. It is mainly due to:
3.A force on 5N is applied to a body weighing 10N. Its acceleration in m/s^2 is:
- a 0.5
- b 2
- c 5
- d 50
4.SI unit of linear momentum is:
5.N kg^-1 is equivalent to:
6.The rate of change of momentum of free falling body is equal to its:
7.Change in momentum of a body is equal to:
8.A book of mass 5 kg is placed on the table, the magnitude of net force acting on the book is:
9.Thrust force is a consequence of which law of motion:
10.A force acts on a body for 2 seconds and it produces 50 kg m/s change in its momentum. The force acting on the body is:
11.The force which moves the car is:
- a Force developed by engine
- b Force of friction between road tyre
- c uniform velocity
- d Water split on the road
12.An object of mass 1 kg placed at earth's surface experiences a force of:
13.Net force on the body falling in air with uniform velocity is equal to:
14.At the fairground, the force that balances your weight is:
- a gravitational force
- b centripetal force
- c electrostatic force
- d frictional force
15.A bucket having some water is revolved in vertical circle. Water does not spill out, even the bucket is upside down, due to:
- a Weight of water
- b Centrifugal force on water
- c Inertia of water
- d Action and Reaction balance each other