HESI A2 test Physic - Uniform Circular Motion

Which of the following is the name of the force acting on a body in circular motion that is directed toward the center?

Centripetal Force

Which of the following is the name of the force acting on a body in circular motion that is directed away from the center?

Centrifugal Force

A 100 g tennis ball attached to a string is rotated about a 3 meter radius. If the ball’s velocity is approximately 9 m/s, how much force is being generated?

2.7 N

In an amusement park, a 21 kg girl is riding on the merry-go-round that has a radius of 6 m. When it reaches its full speed, the velocity of the girl is 7 m/s. What would be the centripetal force acting on the girl?

171.5 N

A car of 900 kg mass is driven around a circular race track of 600 m radius at a constant velocity of 220 km/h. What is the centripetal force acting on the car?

5601.85 N

A 100 g tennis ball attached to a string is rotated about a 3 meter radius. If the string broke when it was at 15 N of tension, how fast was the ball moving?

21.21 m/s

A 2 kg cannon ball attached to a rope is rotated about a 1.25 meter radius. If the rope broke when it has a centripetal acceleration of 20, how fast was the cannon ball moving?

5 m/s

A 200 g stone attached to a string is rotated about a 2 meter radius. If the string broke when it was at 18 N of tension, how fast was the ball moving?

13.42 m/s

If a 60 kg motorcycle races around a racetrack at 42 m/s with a centripetal acceleration of 6 m/s², what would the racetrack’s radius be?

294 m

A race car of 700 kg mass is driven around a circular race track at 60 m/s with a centripetal acceleration of 8 m/s², what would the racetrack’s radius be?

450 m