Newton's Laws

According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will

• remain in motion.

• eventually come to a stop.

• change its momentum.

• accelerate.

Which law explains when a magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them.

• Law 1

• Law 3

Tags

NGSS.MS-PS2-1

A person steps out of the boat and onto the dock.  As the person moves forward onto the dock, the boat moves backward.  Which statement best describes the backward motion of the boat as the person steps forward?

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

• Every mass exerts a force on every other mass.

• An object at rest tends to stay at rest.

• Friction opposes the motion of an object.

Tags

NGSS.MS-PS2-1

A person in car  slides to the right when going through a very sharp left turn on the highway. 

• 1st Law

• 2nd Law

• 3rd Law

Tags

NGSS.HS-PS2-1

What is the definition of "weight"?

• the force in which gravity pulls on an object

• the time it takes to get on a ride 

• the amount of matter in an object

• the size of an object

Tags

NGSS.MS-PS2-4

An object will not have any inertia if it is __________?

• Accelerating

• Moving in a circle

• In space

• … Nonsense! All objects have inertia

 267.5 N unbalanced force applied to push a stuffed chair across the room, causing an acceleration of 4.2 m/s2. What is the mass of the chair?

• 26.75 kg

• 63.69 kg 

• 263.3 kg 

• 1123.5 kg

Tags

NGSS.MS-PS2-2

Which of these best describes why your weight (on Earth) would change on another planet?

• weight doesn’t change, no matter where you are

• different planets have different gravitational pulls

• In general, the smaller the planet, the greater weight

• dehydration effects on different planets change weight

Tags

NGSS.MS-PS2-4

An empty truck and a fully loaded truck are next to each other at a traffic light. When the light turns green, the lighter truck increases speed more quickly. Which of these best explains this situations

• Newton's first law

• Newton's second law

• Newton's third law

• Conservation of momentum

Tags

NGSS.MS-PS2-2

What law is best described by inertia?

• 1st

• 2nd

• 3rd