AP Physics C

What happens to an object's speed as the radius decreases?

• It increases.

• It decreases.

• It remains unchanged.

Calculate the mass of an object if it took 20 N to rotate it in a circle with a radius of 2 meters with a velocity of 4 m/s

• 4.1 kg

• 3.6 kg

• 2.5 kg

• 1.8 kg

Tags

NGSS.HS-PS2-1

What is the relationship between centripetal force and the mass of an object?

• direct

• inverse

• exponential

• inverse squared

As distance between two objects increase the pull of gravity 

• Increases

• Decreases

• Stays the same

Tags

NGSS.HS-PS2-4

Which of the following is a fictional force that pushes outward as something moves in a circle?

• Centripetal Force

• Gravitational Force

• Centrifugal Force

• Normal Force

Two factors effecting the magnitude of the force of gravity between 2 objects are...

• mass and distance 

• mass and matter

• distance and weight 

• weight and mass

Tags

NGSS.HS-PS2-4

Which expression could be used to calculate the force acting on a ball, where m = ball mass, v = ball velocity, and t = time?

• mv/t

• mv²/2

• mv²/t

• mv/2t

Tags

NGSS.HS-PS2-1

The number 6.67 x 10 -11 N* m^2 / kg^2 is called the _______________.

• universal speed constant

• the speed force

• universal gravitational constant

• Earth's gravitational constant

Tags

NGSS.HS-PS2-4

The time taken for one complete cycle is called the...

• Period

• Frequency

• Angular velocity

Tags

NGSS.HS-PS4-1

What happens to an object's speed as the radius is cut in half?

• It is halved

• It doubles

• It remains unchanged.