Newton's Laws, Calculations, and Forces and Motion

Which of the following best describes Newton’s first law of motion?

• An object in motion stays in motion unless acted upon by an unbalanced force.

• Force equals mass times acceleration.

• Every action has an equal and opposite reaction.

• The acceleration of an object depends on its mass.

If an object experiences an unbalanced force, what will happen?

• It will remain at rest.

• It will move at a constant speed.

• It will accelerate.

• It will slow down and stop.

If you push on a wall with 50 N of force, the wall pushes back with:

• 0 N of force.

• 25 N of force.

• 50 N of force.

• 100 N of force.

A soccer ball is at rest until a player kicks it. Which law of motion does this demonstrate?

• Newton’s first law

• Newton’s second law

• Newton’s third law

• The law of conservation of energy

If a 10 kg object is pushed with a force of 30 N, what is its acceleration?

• 1 m/s²

• 3 m/s²

• 10 m/s²

• 30 m/s²

A car with a mass of 1000 kg accelerates at 2 m/s². What is the net force acting on it?

• 500 N

• 1000 N

• 2000 N

• 4000 N

What is the formula for Newton’s second law?

• Force = mass × acceleration

• Force = mass + acceleration

What is the formula for force?

• Force = mass x acceleration

• Force = mass / acceleration

• Force = acceleration + mass

• Force = mass + acceleration

What happens to an object when a force is applied?

• It moves

• It stops

• It changes direction

• All of the above

Which of the following is a unit of force?

• Newton

• Joule

• Watt

• Pascal