Ucm

A 2.0 x 10³-kilogram car travels at a constant speed of 12 meters per second around a circular curve of radius 30 meters.
What is the magnitude of the centripetal acceleration of the car as it goes around the curve? 

• 0.40 m/s²
• 4.8 m/s²
• 800 m/s²
• 9,600 m/s²

Tags

NGSS.HS-PS2-1

A 1750-kilogram car travels at a constant speed of 15 meters per second around a horizontal circular track with a radius of 45 meters. The magnitude of the centripetal force acting on the car is 

• 5 N
• 583 N
• 8750 N
• 3.94 x 10⁵

Tags

NGSS.HS-PS2-1

An unbalanced force of 40 newtons keeps a 5.0-kilogram object traveling in a circle of radius 2.0 meters. What is the speed of the object? 

• 8.0 m/s
• 2.0 m/s
• 16 m/s
• 4.0 m/s

Tags

NGSS.HS-PS2-1

In an experiment, a 0.028-kilogram rubber stopper is attached to one end of a string. A student whirls the stopper overhead in a horizontal circle with a radius of 1.0 meter. The stopper completes 10 revolutions in 10 seconds.
Calculate the magnitude of the centripetal force on the whirling stopper.

• 6.28 N
• 0.628 N
• 62.8 N
• 1.1 N

Tags

NGSS.HS-PS2-1

 The diagram shows the top view of a 65-kilogram student at point A on an amusement park ride. The ride spins the student in a horizontal circle of radius 2.5 meters, at a constant speed of 8.6 meters per second. The floor is lowered and the student remains against the wall without falling to the floor.
  The magnitude of the centripetal acceleration acting on the student at point A is approximately 

• 1.2  x 10⁴  m/s² 
• 1.9 x 10³  m/s²
• 2.2 x 10²  m/s²
• 3.0 x 10¹  m/s²

Tags

NGSS.HS-PS2-1

The diagram below shows a 5.0-kilogram bucket of water being swung in a horizontal circle of 0.70-meter radius at a constant speed of 2.0 meters per second.The magnitude of the centripetal force on the bucket of water is approximately 

• 5.7 N
• 14 N
• 29 N
• 200 N

Tags

NGSS.HS-PS2-1

The diagram below shows a 5.0-kilogram bucket of water being swung in a horizontal circle of 0.70-meter radius at a constant speed of 2.0 meters per second.The magnitude of the centripetal acceleration on the bucket of water is approximately 

• 5.7 m/s²
• 14  m/s²
• 29 m/s²
• 200  m/s²

Tags

NGSS.HS-PS2-1

A go-cart travels around a flat, horizontal, circular track with a radius of 25 meters. The mass of the go-cart with the rider is 200 kilograms. The magnitude of the maximum centripetal force exerted by the track on the go-cart is 1200 newtons.
What is the maximum speed the 200-kilogram go-cart can travel without sliding off the track? 

• 8.0 m/s
• 12 m/s
• 150 m/s
• 170 m/s

Tags

NGSS.HS-PS2-1

A student on an amusement park ride moves in a circular path with a radius of 3.5 meters once every 8.9 seconds. The student moves at an average speed of 

• 0.39 m/s
• 1.2 m/s
• 2.5 m/s
• 4.3 m/s

Tags

NGSS.MS-PS3-1

In an experiment, a 0.028-kilogram rubber stopper is attached to one end of a string. A student whirls the stopper overhead in a horizontal circle with a radius of 1.0 meter. The stopper completes 10 revolutions in 10 seconds.
Determine the speed of the whirling stopper. 

• 6.28 m/s
• 0.628 m/s
• 62.8 m/s
• 1.1 m/s