Phys 203

At the instant shown in the diagram, the car's centripetal acceleration is directed-

• toward E

• toward N

• toward W

• clockwise

Tags

NGSS.HS-PS2-1

A pilot experiences centripetal acceleration of 2g's while maneuvering a loop at a speed of 400 m/s.  What is the radius of the loop?

• 203 m

• 8163 m

• 80,003 m

• 23 m

Tags

NGSS.HS-PS2-1

If the radius of the string is .3 meters long and the stopper makes 5 revolutions per second, what is the speed of the stopper? (Hint: C=2πr)

• 9.4 m/s

• 6.8 m/s

• 11.7 m/s

• 3.5 m/s

Tags

NGSS.MS-PS3-1

If a ball is swinging at the end of a rope and the rope is suddenly cut, assuming there is no gravity, what best describes the path it will take?

• It will fly in a straight line forward from where it was cut

• It will fly in a curved line away from the circle

• It will fly inward toward the circle

• 

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

A toy train moves in a circular track with a velocity of 2.2 m/s, the axis of rotation is 1.8 m. What is its centripetal acceleration?

• 1.22 m/s²

• 0.81 m/s²

• 2.69 m/s²

• 1.47 m/s²

Tags

NGSS.HS-PS2-1

You swing a bucket of water attached to a string in a circle above your head. What keeps the water in the bucket?

• Friction

• Centripetal Force

• Gravity

• Inertia

Tags

NGSS.MS-PS2-2

Which of the following is the unit for centripetal force?

• J

• m/s²

• kg⋅m/s

• N

Tags

NGSS.HS-PS2-1

What states that "every object in the universe attracts every other object"?

• Law of Universal Gravitation

• Newton's First Law of Motion

• My mother

• Inertia & gravity

Tags

NGSS.HS-PS2-4

Two asteroids exert a gravitational force, F, on each other. Some time later, the asteroids are now three times as far from each other as before. Which of the following represents the gravitational force at this distance?

• F/3

• F/2

• F/6

• F/9

Tags

NGSS.HS-PS2-4

If I double the mass of one object, but don't change anything else... What happens to the gravitational force between two objects?

• Doubles

• Quadruples

• Cut in Half

• 4x Smaller

Tags

NGSS.HS-PS2-4