Amy drives around a roundabout of radius 18.0 m. The car takes 5.0 s to drive a semi-circle. What is the frequency of the car?

• 0.01 Hz

• 0.1 Hz

• 1 Hz

• 5 Hz

Amy drives around a roundabout of radius 18.0 m at 25 ms^-1 Calculate the centripetal acceleration of the car.

• 4.36 ms^-2

• 11.3 ms^-2

• 24.2 ms^-2

• 34.72 ms^-2

Amy drives around a roundabout of radius 18.0 m at 25 ms^-1. If the total mass of the car is 1250 kg, calculate the centripetal force.

• 434 N

• 3000 N

• 5746.21 N

• 43402.78 N

A car is doing donuts in the parking lot with a velocity of 7.5 m/s in a radius of 5 m. What is the circular acceleration?

• 11.25 m/s²

• 37.5 m/s²

• 1.5 m/s²

• 3.333 m/s²

A pilot experiences centripetal acceleration of 2g's 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

The radius of the moon's orbit about the center of the earth is 3.84 x 10⁸ m. The period of the orbit is 2.36 x 10⁶ s. Calculate the velocity of the moon.

• 1.02 x 10³ m s^-1

• 1.52 x 10³ m s^-1

• 2.03 x 10³ m s^-1

• 2.54 x 10³ m s^-1

The radius of the moon's orbit about the center of the earth is 3.84 x 10⁸ m. The period of the orbit is 2.36 x 10⁶ s. The mass of the moon is 7.30 x 10 ²² kg. Calculate the size of the centripetal force acting on the Moon in its orbit.

• 1.324 x 10²⁰ N

• 2.234 x 10¹⁹ N

• 2.234 x 10²⁰ N

• 3.21 x 10¹⁹ N

Ewan uses 985.4 N of centripetal force to circle the "hammer". He circles it five times in 8 seconds with a radius of 0.75 m. Calculate the hammers velocity.

• 7.54 ms^-1

• 0.59 ms^-1

• 0.94 ms^-1

• 3.76 ms^-1

Ewan uses 985.4 N of centripetal force to circle the "hammer". He circles it five times in 8 seconds with a radius of 0.75 m. Calculate the hammers mass.

• 13 kg

• 24 kg

• 17 kg

• 5 kg

The 450 kg car takes 3.6 seconds to go three times around the roundabout with a radius of 6 m. Calculate the centripetal force acting on the car.

• 1309 N

• 35000 N

• 358271 N

• 74022 N