PHYSICS QUIZ 1

A car starts from rest and accelerates uniformly at 5 m/s². What is the velocity of the car after 10 seconds?

• (a) 10 m/s

• (b) 50 m/s

• (c) 25 m/s

• (d) 100 m/s

A ball is thrown vertically upward with a velocity of 20 m/s. How much time will it take to reach the highest point? (Take g=10 m/s^2)

• (a) 1 second

• (a) 2 second

• (a) 3 second

• (a) 4 second

A particle moves in a straight line with uniform acceleration. If it covers distances x_1​ and x_2​ in consecutive seconds, what is the acceleration of the particle?

• x_2 - x_1

• (x_2 - x_1)/2

• 2(x_2 - x_1)

• (x_2 - x_1)^2

Which of the following pairs have the same dimensions?

• b) Work and Energy

• (a) Force and Power

• (c) Pressure and Torque

• (d) Velocity and Acceleration

The dimensional formula of Planck’s constant is:

• [MLT^(−2)]

• [L^2T^(−1)]

• [ML^2T^(−1)]

• [ML^(-2)T^(−1)]

A block of mass 10 kg, is placed on a smooth horizontal surface. A force of 50N is applied. What is the acceleration of the block?

• 5 m/s^2

• 10m/s^2

• 2.5m/s^2

• 50 m/s^2

A solid sphere is rotating about its diameter. Its moment of inertia is given by

• 2/5 MR^2

• 2/3 MR^2

• 3/5 MR^2

• 2/5 MR^3

A body of mass 5kg is raised to a height of 10m. What is the potential energy stored in the body? (Take g=10m/s^2)

• 50J

• 500J

• 100J

• 10J

What is the kinetic energy of a body of mass 2kg moving with a velocity of 3m/s?

• 1J

• 3J

• 6J

• 9J

if the power of a machine is 100W, how much work does it do in 10s?

• 5J

• 10J

• 20J

• 1000J