Force and laws of motion easy

Force and Laws of Motion Quiz (Easy)

1. Which of Newton's laws of motion states that an object at rest will remain at rest, and an object in motion will remain in motion unless acted upon by an external force?

a) Newton's First Law b) Newton's Second Law c) Newton's Third Law d) Newton's Law of Universal Gravitation

2. The force that opposes the motion of objects through a fluid (liquid or gas) is called:

a) Friction b) Gravitational force c) Normal force d) Drag force

3. The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. This statement is known as:

a) Newton's First Law b) Newton's Second Law c) Newton's Third Law d) Hooke's Law

4. When a force is applied to an object in the direction of its motion, the object's speed will:

a) Increase b) Decrease c) Remain constant d) First increase and then decrease

5. Which of the following is an example of a contact force?

a) Magnetic force b) Electrostatic force c) Tension in a rope d) Gravitational force

6. An object weighs 100 N on the surface of the Earth. What will be its weight on the surface of the Moon? (Assume acceleration due to gravity on the Moon is about 1/6th of that on Earth)

a) 16.6 N b) 100 N c) 600 N d) 166 N

7. An astronaut is inside a spaceship in outer space, far away from any other objects. If the astronaut pushes a box with a force of 20 N, how will the box move?

a) The box will move in the direction opposite to the force applied by the astronaut. b) The box will remain at rest because there is no external force. c) The box will move with a constant speed in the direction of the force applied by the astronaut. d) The box will move with a constant acceleration in the direction of the force applied by the astronaut.

8. An object is at rest on a horizontal surface. The force of friction acting on the object is 10 N. What is the minimum force that must be applied to the object to start its motion?

a) Less than 10 N b) Equal to 10 N c) More than 10 N d) It depends on the mass of the object

9. When an object is in equilibrium, the net force and net torque acting on it are:

a) Both zero b) Non-zero c) Equal d) Opposite in direction

10. The SI unit of force is:

a) Newton (N) b) Kilogram (kg) c) Meter (m) d) Joule (J)