Newton's Laws of Motion Concepts

What does Newton's First Law state?

• Energy cannot be created nor destroyed.

• Everything has an equal and opposite reaction.

• F = m x a

• A body at rest stays at rest, or in motion stays in motion, at constant velocity unless acted on by a net external force.

What does Newton's Second Law of motion state?

• F = m x a

• An object at rest stays at rest, or in motion at constant velocity, unless acted upon by a net external force.

• Gravity is a constant force.

• Everything has an equal and opposite reaction

What does Newton's Third Law of Motion state?

• F = m x a

• Inertia

• Everything has an equal and opposite reaction

• An object at rest stays at rest, or in motion at constant velocity, unless acted on by a net external force.

What is inertia?

• Constant velocity

• acceleration

• resisting acceleration

• The act opposed on gravitation

What is the property acceleration?

• Speed

• Speeding up or slowing down

• Constant Velocity

• Inertia

What is momentum?

• A measurement of how hard it is to stop an object.

• A property of force

• acceleration and mass moving at constant velocity

• A push or pull on an object that results in movement

What is a vector?

• Something with direction

• Something with magnitude

• Something with direction and magnitude

• A property only in force

Solve for momentum, p = m x v: A small car weighs 1200 kg and is traveling at 60 km/h, which is 16.67 m/s. Suddenly a car hits the breaks in front of it. What's the amount of momentum does it take for the car to stop? Use m/s in your calculation.

• 20,000

• 72,000

• 3.6

• 72

A car is driving at a constant velocity of 75 m/s on the highway headed to Tucson, on a windy day. What is the force acting upon it to continue it's state of motion?

• 0 N, due to "the constant velocity" which means the car is already moving.

• 75 m/s because of one of Newton's Laws.

• It depends on the strength of the wind

• 75 N to the right, due to action and reaction, as well as inertia.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which law describes this picture?

• Newton's First Law
• Newton's Second Law
• Newton's Third Law