Physics Quiz

When you lift a load using a pulley, which of the following forces is NOT present?

• Applied force

• Force of gravity

• Spring force

• Tension force

It refers to a force that can be either attractive or repulsive and acts between charged bodies. What is it?

• Buoyant force

• Electromagnetic force

• Gravitational force

• Tension force

Complete the sentence: When the net force acting on a moving object is zero, the object ______________

• moves in constant direction

• moves at constant speed

• moves at varying speed

• moves with constant speed and direction

When a box is being pushed on an inclined plane, which of the following are all forces acting on the box?

• Applied force, frictional force, spring force and gravitational force

• Tension force, frictional force, normal force and gravitational force

• Applied force, frictional force, Normal force and gravitational force

• Applied force, frictional force, normal force and air resistance

Consider an athlete who runs to the East from point A (0 m) to point C (40 m) stops, then reverse his run to point B (20 m), and stops again. The distance he covered is 60 m. What is his displacement?

• 20 m

• 20 m, east

• 20 m, west

• 60 m, west

If a car moves at an average speed of 50 km/h, how far will it travel in 5h?

• 250 km

• 250 km/h

• 10 h

• 10 km

What is the difference between speed and velocity?

• There is no difference, they are the same thing.

• Speed is a scalar quantity, velocity is a vector quantity.

• Speed is the rate of change of position, velocity is the rate of change of displacement.

• Both B and C

Friction can be increased by ___________

• polish the surface

• using ball bearings

• making rough surface

• applying lubricants

Which of the following is the advantage of frictional force?

• produce heat

• slide easily

• prevents from slipping while walking

• produce noise

Your mass will be changed if you travel to the moon.

• True

• False