Gaya sentripetal(MLD)

Which represents the acceleration of the ball?

• A
• B
• C
• D

Tags

NGSS.HS-PS2-1

Which of the following depict the speed of the blowing ball?

• A
• B
• C
• D

Tags

NGSS.MS-PS3-1

Which of the following increase the centripetal force?

• Increasing the radius
• Increasing the velocity
• Decreasing the mass
• Decreasing the acceleration

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

If car A and car B are both traveling at the same speed, which will require a higher centripetal force?

• Car A

• Car B

• They have the same centripetal force

Tags

NGSS.HS-PS2-1

An engineer is planning a road with a turn. If the speed limit is 20 m/s and the centripetal acceleration cannot exceed 8.5 m/s/s, how big must the radius of the turn be?

• 2.4 m

• 47 m

• 170 m

• 3400 m

Tags

NGSS.HS-PS2-1

A car is making a turn at speed v. The radius of the turn is r and the centripetal force on the car is F.

If the car rounds the same curve at speed 2v, what is the required centripetal force?

• 0.5 F

• F

• 2F

• 4F

Tags

NGSS.HS-PS2-1

The combined mass of a race car and its driver is 600 kg. Travelling at constant speed, the car completes one lap around a circular track of radius 160 m in total time of 36 s. What is the magnitude of the centripetal acceleration of the car?

• 0.17 m s^-2

• 4.9 m s^-2

• 78 m s^-2

• 100 m s^-2

Tags

NGSS.HS-PS2-1