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Calculate the centripetal force required to make a 5 kg ball move 4 m/s in a circle with a radius of 2 m.
300 m/s
19.7 m/s
2.7 m/s^2
friction
tangent
19.890 N
40 N
2.5 m/s
A Hot Wheels toy car races around a circular track that has a radius of 1.2 meters. It moves around the track with a tangential velocity of 1.8 m/s. What is the toy’s centripetal acceleration?
300 m/s
19.7 m/s
2.7 m/s^2
friction
tangent
19.890 N
40 N
2.5 m/s
A bicycle has a speed of 30 m/s . What is the centripetal acceleration of its tires if the radius is 3 m?
300 m/s
19.7 m/s
2.7 m/s^2
friction
tangent
19.890 N
40 N
2.5 m/s
The velocity is always _____ to the line of a circle.
300 m/s
19.7 m/s
2.7 m/s^2
friction
tangent
19.890 N
40 N
2.5 m/s
A test car moves at a constant speed around a circular track. If the car is 48.2 m from the track's center and has a centripetal acceleration of 8.05 m/s2, what is the car's velocity?
300 m/s
19.7 m/s
2.7 m/s^2
friction
tangent
19.890 N
40 N
2.5 m/s
An ice skater with a mass of 75 kg skates in a circle that has a radius of 22.3 meters. The ice skater takes 9.17 seconds to complete a lap. What is the ice skater’s centripetal force?
300 m/s
19.7 m/s
2.7 m/s^2
friction
tangent
19.890 N
40 N
2.5 m/s
A rope attaches a tire to an overhanging tree limb. A girl swinging on the tire has a centripetal acceleration of 3.0 m/s2. If the length of the rope is 2.1 m, what is the girl’s velocity?
300 m/s
19.7 m/s
2.7 m/s^2
friction
tangent
19.890 N
40 N
2.5 m/s
What is the force that causes centripetal acceleration when a car goes around a curve?
300 m/s
19.7 m/s
2.7 m/s^2
friction
tangent
19.890 N
40 N
2.5 m/s
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