Physics Unit 3 Blitz

A change in an objects momentum is due to a(n) _____.

• force

• time

• velocity

• impulse

Tags

NGSS.HS-PS2-2

The definition of the term centripetal force is _____.

• a force on a body rotating around an axis and is due to inertia that pulls the body toward the outside of the curve, sometimes called a fictitious force

• object's tangential velocity divided by the radius

• a force that pulls a moving object inwards towards an axis it is rotating around

• the center of mass for a solid object

Select two that apply.

A parabolic trajectory has two vectors: _____ and _____.

• linear

• NW

• vertical

• SW

• horizontal

Match the following units

• Watt

• SI unit for velocity

• Newton

• SI unit for force

• m/s

• SI unit for work

• Joule

• SI unit for power

 unit that is equal to 33 000 ft-lbs/min or 550 ft-lbs/s is the ________.

• joules

• horsepower

• kilograms

• watts

A cog on a gear spins around the gear's axis. If the gear's radius is 3.79 meters and it takes the cog 0.51 minutes to complete a full rotation, what is the cog's rotational speed?

• 12 rpm

• 3.79 rpm

• 34 rpm

• 1.96 rpm

_____ refers to the motion that is tangent to an object's path.

• Rotational speed

• Lapping speed

• Revolutional speed

• Tangential speed

If an object moves around an external axis is termed _____.

• revolution

• vector

• distance

• rotation

Tags

NGSS.HS-ESS1-4

If you measure the amount of work accomplished in a particular time interval, you have measured _____.

• newtons

• power

• work

• distance

Tags

NGSS.HS-PS2-1

Velocity, acceleration, and momentum are all _____ quantities.

• vector

• orbital

• universal

• scalar

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2