Newton's Laws of Motion Concepts

What is Newton's 2nd Law?

• For every action there is an equal and opposite reaction.

• Acceleration depends on two variables, the mass of the object and the amount of force.

Answer explanation

Newton's 2nd Law states that acceleration is directly proportional to the net force acting on an object and inversely proportional to its mass. Thus, the correct choice highlights that acceleration depends on mass and force.

"A body at rest tends to remain at rest, and a body in motion, tends to remain in motion, unless acted upon by an unbalanced force."

This is describing Newtons..

• 4th Law

• 3rd Law

• 2nd Law

• 1st Law

Answer explanation

This statement describes Newton's 1st Law, which states that an object at rest stays at rest and an object in motion stays in motion unless acted upon by an unbalanced force. Thus, the correct answer is the 1st Law.

If we put the same force on a bowling ball and a soccer ball, the soccer ball will move faster! Which law explains this?

• 1st

• 2nd

• 3rd

Answer explanation

The 2nd law of motion states that acceleration is directly proportional to force and inversely proportional to mass. Since the soccer ball has less mass than the bowling ball, it will accelerate more and move faster when the same force is applied.

Watch as I propel the washers across the desk. Observe what happens as I use different amounts of force.

• Newton's 1st Law, inertia

• Newton's 2nd Law, Force = m x a

• Newton's 3rd Law, action/reaction

Answer explanation

Newton's 2nd Law states that Force equals mass times acceleration (F = m x a). By varying the force applied to the washers, you can observe how their acceleration changes, demonstrating this principle in action.

When you are running. your foot exerts force on the ground and the ground exerts force back onto you. Which of Newton's laws is represented

• 1st

• 2nd

• 3rd

Answer explanation

This scenario illustrates Newton's 3rd law, which states that for every action, there is an equal and opposite reaction. Your foot pushes down on the ground, and the ground pushes back up with equal force.

A soccer ball is sitting in the middle of a field. The ball will remain at rest until an outside force like a players foot or the wind acts upon it. Which of Newton's laws is represented by this?

• 1st

• 2nd

• 3rd

Answer explanation

This scenario illustrates Newton's 1st law, which states that an object at rest will stay at rest unless acted upon by an external force. The soccer ball remains still until a player or wind applies force.

Sally jumps on her trampoline. She exerts a force on the trampoline and the trampoline exerts an equal but opposite force back on Sally. This represents

• Law 1

• Law 3

• Law 2

Answer explanation

Sally's action of jumping and the trampoline's reaction exemplify Newton's Third Law of Motion, which states that for every action, there is an equal and opposite reaction. Thus, the correct answer is Law 3.

What Unit do we Measure Force in?

• Newtons

• Joules

• Force

• Kilograms

Answer explanation

Force is measured in Newtons, named after Sir Isaac Newton. Joules measure energy, kilograms measure mass, and 'Force' is a general term, not a unit. Therefore, the correct answer is Newtons.

What is Newton's 3rd Law?

• For every action there is an equal and opposite reaction.

• Acceleration depends on two variables, the mass of the object and the amount of force.

Answer explanation

Newton's 3rd Law states that for every action, there is an equal and opposite reaction. This means that forces always occur in pairs, making the first answer choice correct.

two forces acting in opposite directions on an object, and equal in size

• Friction

• F=ma

• Balanced Force

• Friction

Answer explanation

Balanced forces occur when two forces acting in opposite directions are equal in size, resulting in no net force on the object. This means the object remains at rest or continues to move at a constant velocity.