Newton's 3rd law and momentum

The momentum of an object is defined as

• Velocity times the time interval
• Mass times acceleration
• Mass times velocity
• Force times the time interval

Tags

NGSS.HS-PS2-2

Which has more momentum, a large truck moving at 30 mph or a small car moving at 30 mph?

• They're both the same.
• The small car.
• The large truck.
• Not enough information.

Tags

NGSS.HS-PS2-2

A speeding bus makes contact with a bug that splatters onto the windshield.  What is the size of the corresponding force that the bug exerts against the windshield?  The force the bug exerts on the windshield is __________________- the force the windshield exerts on the bug.

• greater than
• less than
• equal to

Compared to a red sports car moving at 30 mph, an identical blue sports car moving 60 mph has

• Four times as much momentum as the red car
• Twice as much momentum as the red car
• The same momentum as the red car
• Half the momentum as the red car

Tags

NGSS.HS-PS2-2

According to Newton’s Third Law, forces always come in what size groups?

• one
• two
• three
• four

For every force there is an equal and opposite force is a summary of which Newton’s Law?

• First
• Second
• Third
• Fourth

Tags

NGSS.MS-PS2-1

An object in motion tends to stay in that state of motion unless acted upon by an unbalanced force is a summary of which Newton’s Law?

• First
• Second
• Third
• Fourth

A dart is fired from a Nerf launcher. Select the phrase that correctly completes the following sentence.  The force on the dart is ______ to the force on the launcher.

• smaller than
• larger than
• equal to

Tags

NGSS.HS-PS2-1

Which of the following has the most momentum?

• A semi-truck parked in a parking lot
• An empty building
• A tightrope walker crossing Niagara falls
• A pickup truck traveling down the highway at the speed limit

Tags

NGSS.HS-PS2-2

A freight train rolls along a track with considerable momentum. If it rolled at the same speed, but had twice as much mass, its momentum would be

• Doubled
• Quadrupled
• Unchanged
• Zero

Tags

NGSS.HS-PS2-2