Forces and Newton's Laws Quiz

According to Newton's first law of motion, an object at rest will remain at rest unless acted upon by what?

• external force

• friction

• inertia

• gravity

What is the SI unit of force?

• Kilogram (kg)

• Meter (m)

• Second (s)

• Newton (N)

Which of Newton's laws states that for every action, there is an equal and opposite reaction?

• Newton's second law of motion

• Newton's first law of motion

• Newton's third law of motion

• Newton's law of universal gravitation

What is the acceleration due to gravity on Earth?

• 9.8 m/s^2

• 20.0 m/s^2

• 12.5 m/s^2

• 5.0 m/s^2

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

• Gravity

• Magnetism

• Electricity

• Friction

What is the formula to calculate force?

• force = mass / acceleration

• force = mass + acceleration

• force = mass - acceleration

• force = mass * acceleration

Which of the following is an example of a non-contact force?

• Gravity

• Tension

• Magnetism

• Friction

What is the weight of an object with a mass of 10 kg on Earth? (Assuming g = 9.8 m/s^2)

• 200 N

• 98 N

• 50 N

• 10 N

Which of Newton's laws explains the relationship between force, mass, and acceleration?

• Newton's law of universal gravitation

• Newton's third law of motion

• Newton's first law of motion

• Newton's second law of motion

What is the force of gravity acting on an object with a mass of 5 kg? (Assuming g = 9.8 m/s^2)

• 45 N

• 55 N

• 40 N

• 49 N