A scientist claims that people who compete in the Olympic event of skeleton are insane. With their chin often 3 in. from the ice, they rush down the track at speeds of 75 mph on a nearly weightless sled. One turn in the Sochi Olympics had a radius of 50 m. At a speed of 75 mph, calculate the total force on a 145-lb rider. Round the final answer to the nearest whole number.

Q: A highway exit ramp was constructed at an angle of 12 degrees and has a radius of 54m. What speed…

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Q: A person drags a sled across a frozen lake to town. The surface of the lake is quite smooth and…

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Q: A lamp hangs vertically from a cord in a descending elevator that decelerates at 1.9 m/s2. (a) If…

A:

Q: A 75.1-kg skydiver reaches a terminal speed of 46.5 m/s with her parachute undeployed. Suppose the…

A: Given : m = 75.1 kg v = 46.5 m/s Fdrag = kv2 g = 9.8 m/s2

Q: A truck (m = 2500 kg) is driving through the top of Melbourne causeway which has a radius of…

A: mass of truck (m) = 2500 kg radius of curvature (r) = 80 m Normal force experienced by truck on top…

Q: A spherical raindrop 3.5 mm in diameter falls through a vertical distance of 3700 m. Take the…

A: The solution for this question has been given below...

Q: A toy airplane is tethered to ground so that it flies in a circle parallel to the ground. The tether…

A: (a) Acceleration of the plane.(b) Strength of the cord. (c) Upward lift force on the plane.

Q: A 2.353E+3-kg race car travels around a flat, circular track at a constant speed of 74.5 m/s. The…

A:

Q: ou are exiting a highway and need to slow down on the off-ramp in order to make the curve. It is…

A: Frictional force of mass m with coefficient of static friction μ, =μmg Centripetal force of mass m…

Q: Circular turns of radius r in a race track are often banked at an angle θ to allow the cars to…

A: Radius of circular track is Angle of inclination of Normal force is Gravitational force is Speed of…

Q: A 2.386E+3-kg race car travels around a flat, circular track at a constant speed of 85.0 m/s. The…

A: Given that :Mass of the car  = 2.386 x 103 kgSpeed of the car = 85 m/sCircumference of the track =…

Q: Determine the speed, acceleration and net force acting upon the halfback.

A: The halfback’s speed can be determined as, Here, d and t represent the distance and time,…

Q: ... 5.21 In Section 5.1.4, it was commented that g does change with altitude. The formula for g as…

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Q: as the speed of the turntable increases until it reaches a rate of 60 revolutions per minute and…

A: Given:-  The distance of the coin from the center of the turntabled = 0.2 m.The coin remains in…

Q: A firefighter who weighs 124 lb slides down an infinitely long fire pole that exerts a frictional…

A:

Q: In 1908, Washington Senators' catcher Gabby Street caught a baseball dropped from the top of the…

A: We are given a free falling body. There are 2 forces acting on the ball. One is the gravity…

Q: A 62.9-kg skydiver reaches a terminal speed of 57.0 m/s with her parachute undeployed. Suppose the…

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Q: You are driving a car. You pass over a speed breaker, whose shape is roughly a semicircle of radius…

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Q: A 5.7-kg rock and a 4.6 x 10-4-kg pebble are held near the surface of the earth. (a) Determine the…

A: Mr = 5.7 kgMp = 4.6 x 10-4 kgMr - mass of the rockMp - mass of the pebble

Q: A spaceship is in orbit around the earth at an altitude of 12000 miles. Which one of the following…

A: A spaceship is in orbit around the earth at an altitude of 12000 miles. Which one of the…

Q: PRACTICE ANOTHER Suppose the mass of a fully loaded module in which astronauts take off from the…

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Q: A 52.4-kg skydiver reaches a terminal speed of 63.3 m/s with her parachute undeployed. Suppose the…

A: Given : mass of skydiver, m = 52.4 kg Terminal speed, v = 63.3 m/s2  Fdrag = kv2  Acceleration due…

Q: body having a mass of 40kg rests on a horizontal table and it is found that the least horizontal…

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Q: A hang glider and its pilot have a total mass equal to 134 kg. While executing a 360° turn, the…

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Q: A rock mass m=0.71 kgIs attached to a massless string of length l= 0.52 m. The rock is swung in a…

A: mass of rock (m) = 0.71 kgLength of string = radius of circular arc = 0.52 m speed (v) = 2.7 ms

Q: The rolling resistance for steel on steel is quite low; the coefficient of rolling friction is…

A: Given, rolling friction coefficient 0.002 mass of locomotive is 180000  initial velocity is 11 m/s…

Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!