Centripetal Motion

Which represents the acceleration of the ball?

• A
• B
• C
• D

Tags

NGSS.HS-PS2-1

A horse gallops around a circular arena.  The centripetal force on the horse is ___.

• directed outward
• tension
• directed toward the center of the arena
• 9.8 N

Tags

NGSS.HS-PS2-1

Which of the following units is used for tangential velocity?

• m/s²
• N
• J
• m/s

Which of the following is the unit for centripetal force?

• J
• m/s²
• kg⋅m/s
• N

Calculate the amount of centripetal force it takes for a softball pitcher to rotate a ball with a velocity of 3 m/s if the ball weighs .12 kg and her arm is .65 meters long.

• .38
• 1.23
• .55
• 1.66 N

Tags

NGSS.HS-PS2-1

An object moves in a circle at a constant speed. Which of the following is NOT true f the object?

• its centripetal acceleration points toward the center of the circle
• its tangential speed is constant
• its velocity is constant
• a centripetal force acts on the object

Which of the following terms means "center seeking"?

• centrifugal
• centrifuge
• centripetal
• centenarian

What is the mass of a 245N weight?

• 25 kg

• 245 kg

• 2401 kg

• 24.01 kg

Suppose the speed of the car is 11.1 m/s (≈ 25 mph) and the radius of curvature (r) is 25 m; determine the magnitude of the centripetal force of the car if its mass is 1200kg.

• 533 N

• 5914 N

• 6056 N

• 12000 N

Tags

NGSS.HS-PS2-1

Suppose the speed of the car is 11.1 m/s (≈ 25 mph) and the radius of curvature (r) is 25 m; determine the magnitude of the centripetal acceleration of the car if its mass is 1200kg.

• 5 m/s/s

• 0.2 m/s/s

• 15.8 m/s/s

• 11 m/s/s