MATRIC • FSC • NTS • ETEA • CSS • PMS etc MCQs Learn, Practice, Prepare, Succeed! Prepare Today, Succeed Tomorrow!

Q: The time rate of change of momentum gives

A) Force

B) Impulse

C) Acceleration

D) Power

Q: The area between the velocity-time graph is numerically equal to

A) Velocity

B) Displacement

C) Acceleration

D) Time

Q: If the slope of velocity-time graph gradually decreases then the body is said to be moving with

A) Positive acceleration

B) Negative acceleration

C) Uniform velocity

D) ZERO acceleration

Q: A 7.0-kg bowling ball experiences a net force of 5.0 N What will be its acceleration

A) 35 m/s²

B) 7.0 m/s²

C) 5.0 m/s²

D) 0.71 m/s²

Q: SI unit of impulse is

A) kg m/s²

B) Ns

C) Ns¹

D) Nm

Q: A ball with original momentum +4.0 kg m/s hits a wall and bounces straight back without losing any kinetic energy The change in momentum of the ball is

A) +4 Ns

B) -4 Ns

C) +8 Ns²

D) -8 Ns

Q: A body is traveling with a constant acceleration from rest distance traveled in 1st second is S₁ and S₂ is the distance traveled in 2nd second which of the following shows a correct relation between S₁ and S₂

A) S₁=S₂

B) S₁=3S₂

C) S₂=3S₁

D) 2S₂=3S₁

Q: During projectile motion the horizontal component of velocity

A) Changes with time

B) Becomes zero

C) Remains constant

D) Increases with time

Q: A projectile is thrown horizontally from a 490 m high cliff with a velocity of 100 m s¹ The time taken by projectile to reach the ground is

A) 2.5 s

B) 5.0 s

C) 7.5 s

D) 10 s

Q: A projectile is launched at 45° to the horizontal with an initial kinetic energy E Assuming air resistance is negligible what will be the kinetic energy of the projectile when it reaches its highest point

A) 0.50 E

B) 0.71 E

C) 0.70 E

D) E

Q: To improve the jumping record the long jumper should jump at an angle of

A) 30°

B) 45°

C) 60°

D) 90°

Q: Range of a projectile on a horizontal plane is same for the following pair of angles

A) 15° and 18°

B) 20° and 80°

C) 43° and 47°

D) 52° and 62°

Q: You push a heavy crate down a ramp at a constant velocity Only four forces act on the crate Which force does the greatest magnitude of work on the crate

A) The force of friction

B) The force of gravity

C) The normal force

D) The force you pushing

Q: The force constant of a wire is k and that of another wire is 3k when both the wires are stretched through same distance if work done are W1 and W2 then

A) W₂=W

B) W₂=9W

C) W=3 W₂

D) W₂=3 Wi

Q: Escape velocity on the surface of the earth is 11.2 km/s If the mass of the earth increases to twice its value and the radius of the earth becomes half the escape velocity is

A) 5.6 km/s⁻¹

B) 11.2 km/s⁻¹

C) 22.4 km/s⁻¹

D) 33.6 km/s⁻¹

Q: An example of non-conservative force is

A) Electric force

B) Gravitational Force

C) Frictional force

D) Magnetic force

Q: When the speed of your car is doubled by what factor does its kinetic energy increase

A) V2

B) 2

C) 4

D) 8

Q: One horse power is given by

A) 746 W

B) 746 KW

C) 746 MW

D) 746 GW

Q: Work is said to be negative when F and d are

A) Parallel

B) Anti Parallel

C) Perpendicular

D) at 45°

Q: Two bodies of masses m1 and m2 have equal momentum their kinetic energies E1 and E2 are in the ratio

A) √m₁:√m₂

B) m₂:m₁

C) m₂:m₁

D) √m₂:√m₁