Circular

A curved groove is place on the top of a level table as shown in the diagram. A ball is pushed in the groove at P so that it leaves at Q. Which picture shows how the ball will move when it leaves the groove at Q?

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Tags

NGSS.HS-PS2-1

Centripetal acceleration always points

• in the direction of the object's motion

• in the opposite direction of the object's motion

• towards the center of the circle

• towards the outside of the circle

What's the centripetal acceleration of an object traveling 2.3 m/s around a circle of diameter 0.6 m?

• 5 m/s²

• 17.63 m/s²

• 10 m/s²

• 8.81 m/s²

A particle P is moving in a circle with uniform speed. Which one of the following diagrams correctly shows the direction of the acceleration a and velocity v of the particle at one instant of time?

• A

• B

• C

• D

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

• A

• B

• C

• D

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Bruno the bat has a mass of 0.58 kg and flies at a speed of 0.8 m/s in circle of radius 0.5 m. What is his acceleration?

• 0.25 m/s²

• 1.3 m/s²

• 1.6 m/s²

• 0.74 m/s²

Tags

NGSS.HS-PS2-1

A race car completes three laps of a circular track with a radius of 35 m in 9.0 seconds. Determine the speed of the car.

• 3.9 m/s

• 73.3 m/s

• 24.4 m/s

• 1.0 m/s

Tags

NGSS.MS-PS3-1

A pilot experiences centripetal acceleration of 2g's (2 x 9.8 m/s²) 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

Which of the following is the unit for centripetal force?

• J

• m/s²

• kg⋅m/s

• N

Centripetal acceleration acts towards the ___________ of the circular motion

• centre

• circumference