a video recording showed that the toe of the boot was moving on a circular arc of radius 0.62m centred on the knee joint when the football was struck. the force of the impact slowwed the boot from a speed of 24m/s to a speed of 15m/s. calculate the centripetal acceleration of the boot just before impact.

Q: The rotor of an ultracentrifuge rotates at a frequency of 50,000 rpm. A particle at the top of the…

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Q: What is the average centripetal acceleration of a car travelling at 20 meters/second on a circular…

A: We know that centripetal acceleration is,      ac= (v2÷r) where, v = linear velocity and r = radius…

Q: such that the top makes an arc of a circle of radius 50 m as shown. At the top the cars velocity is…

A: v= 6 m/s R=50 m centripetal acceleration ac =v2R ac=6250=0.72 m/s2

Q: Consider a level flight turn of a propeller-driven airplane. It can make a complete circular turn in…

A: The speed of the plane is given as 147 m/s. Time taken to complete the circular turn is 3 minutes.…

Q: f a particle moves in a circle with a radius of 1.35 m at a constant speed of 6.70 m/s, what are the…

A: GivenRadius of circle, r=1.35 mSpeed of particle, v=6.70 m/s

Q: NASA’s 20-G centrifuge (https://www.nasa.gov/ames/research/space-biosciences/20-g-centrifuge) can be…

A: The equation for centripetal acceleration is, ac=rω2 the angular velocity is, ω=31…

Q: The spinner has a radius of 9.7cm and rotates with a frequency of 12Hz. Determine the magnitude and…

A: radius of spinner, r= 9.7cm= 0.097 m Frequency, f =12 Hz

Q: A child is twirling a ball on the end of a string in a horizontal circle around her head. What is…

A: In a uniform circular motion, the magnitude of the velocity is always constant but its direction is…

Q: a car is driven at a constant speed around in a circle of radius 50.0 meters. if the centripetal…

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Q: To keep a constant centripetal acceleration, how much should the radius change if the velocity is…

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Q: A point at R=0.2 m from the axis of rotation makes for 1 min 300 rev/min. Determine the centripetal…

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Q: Suppose a rubber stopper of mass 0.020 kg is attached to a string and revolving with constant speed…

A: the mass of the stopper is m= 0.02 kg.  the velocity of the mass revolving arround r radius is v= 4…

Q: boy rides a small car at a speed of 12 km / hr along a circular path with radius of 3.5 m. Wat is…

A: boy rides a small car at a speed of 12 km / hr along a circular path with radius of 3.5 m.

Q: Which has the greater centripetal acceleration, a car with a speed of 15.0 m/s along a circular…

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Q: A car, with mass m, is racing around a circular track with some velocity v. If the car suddenly had…

A: Given:mass of the car is trippledthereforem' = 3mand velocity is doubled,v' = 2vthere if no change…

Q: centripetal acceleration

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Q: A child sitting 1.10 m from the centre of a merry-go-round. He moves with 1.60 m/s Calculate the…

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Q: A rollercoaster car has a speed of 55 kph (kilometers per hour) as it reaches the top of a circular…

A: Given data The speed of the rollercoaster car is v=55 km/h=15.27 m/s The radius is r=20 m   The…

Q: What is the maximum speed (in m/s) that a car with a mass of 450 kg can have at point B in order for…

A: Here, the weight of the car provides the centripetal force.

Q: Mars orbits the Sun at an average distance of 147.72*10^6 km in a neraly circular orbit. The period…

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Q: A car moving at 15 m/s rounds a semi-circular bend of radius 60 m.  What is the centripetal…

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Q: What is the minimum radius at which an airplane flying at 134.9 m/s can make a U-turn if its…

A: We know centripetal acceleration a = v2/R where v is speed.   R = is radius  given maximum…

Q: An athlete in a hammer-throw even swings a 7.0 kg hammer in a horizontal circle at a constant speed…

A: Centripetal acceleration changes with time however it’s magnitude can be the same

Q: A medical saw is rotating at a constant rate of 15 rev per/second. If it has a radius of 12 cm. what…

A: To find the centripetal acceleration Given :  radius = 12 cm = 0.12 m Rotating at a constant rate of…

Q: A fairground ride spins its occupants inside a flying saucer-shaped container. If the horizontal…

A: Given: In this question, the given details are, A fairground ride spins its occupants inside a…

Q: A hunter uses a stone held by a strap (sling) as a weapon to capture prey that strays from him. The…

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Q: A yoyo is spined in a horizontal circle 1.5m in radius at a rate of 1 revolution every 2 seconds.…

A:

Q: A cyclist going around a circular track at 10.0 m/s has a centripetal acceleration of 5.00 m/s2.…

A: Given, The velocity of the car, v= 10.0 m/s centripetal acceleration is  ac= 5.0 m/s2 Let r be the…

Q: What is the magnitude of the car's centripetal acceleration when the car is at the top of the loop?…

A: The centripetal acceleration is defined as when the body moves in the circular path and changes its…

Q: For a centrifuge rotating at 5.91e+3 rpm (rpm = revolutions per minute) with a radius of 1.27 cm,…

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Q: What is the magnitude of the centripetal acceleration of a bicycle that is traveling at a speed of…

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Q: Given that the moon has a period of 27.32 days around Earth and a radius of orbit which is 60 Earth…

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Q: If a 5-kg stone is orbiting at 4 m/s in circular motion with the diameter of 5.6 m. What is the…

A: If an object of mass M is orbiting at a velocity of magnitude v in a circular motion with a radius…

Q: A fast-pitch softball pitcher with an arm 0.65m long executes a pitch in 0.5 seconds. At the instant…

A: