Your answer is partially correct. A skydiver weighing 266 Ibf (including equipment) falls vertically downward from an altitude of 3000 ft and opens the parachute after 10s of free fall. Assume that the force of air resistance, which is directed opposite to the velocity, is 0.80 | »| when the parachute is closed and 12 | v| when the parachute is open, where the velocity vis measured in ft/s. Use g = 32 ft/s?. Round your answers to two decimal places. (a) Find the speed of the skydiver when the parachute opens. v(10) =| 205.95 ft/s (b) Find the distance fallen before the parachute opens. x(10) = i 4657.36 ft (c) What is the limiting velocity vz after the parachute opens? = 74 i 20.59 ft/s

Q: A 54.3 kg pole vaulter running at 10.7 m/s vaults over the bar. The acceleration of gravity is 9.81…

A:

Q: A bicyclist can coast down a 8.18 degree hill at a constant speed of 5.55 km/h. If the force of air…

A: Given , Fair = cv V= 5.55km/h V' = 19.3km/h Mass of cyclist plus bicycle m = 78.6 kg

Q: An object is falling freely under gravity. How much distance will it travel (15m, 25m 2nd and 3rd…

A:

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A: Given Mass of grapefruit is m= 0.25 kg Acceleration due to gravity is g= 9.80 m/s2.

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A: Use the kinematic equation to solve for the velocity of the diver when she touches the water.

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A: Mass of the dog M=5 kg The upward tension T=20 N The free body diagram of the dog and balloons are…

Q: For a swimmer who has just jumped off a diving board, assume air resistance is negligible. The…

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Q: If a body is moving with constant velocity, does it mean that there is no force acting on it?

A: If a body is moving with constant velocity then it does not mean that there is no force acting on…

Q: A 4-lb body moves in a straight line on horizontal plane whose coefficient of friction is 1/4. The…

A: Acceleration:dvdt = advdsdsdt = a(dsdt = v)dvdsv = a This equation can be used to find acceleration…

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Q: At what altitude L (km) above such that the weight of an object reduced to one-third of its

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Q: - An object accelerates at 5m/s? with a force of 500 N. An object with similar mass accelerates at…

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Q: Ohh, thank you for pointing that out...will resend now. An alpine skier—see Fig. 5.12.1—has total…

A: The free body diagram of the skier is shown below.

Q: A 120 kg man is standing on a scale in an elevator moving downward. If the elevator decelerates at…

A:

Q: -1.2m/s?, what is the net force acting on the vehicle?

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Q: A car moving with a velocity of 20m/s in the north direction, is acted upon by a pair of balanced…

A: According to Newton's First law a body will continue to move with same velocity or remains in rest…

Q: o that Fair = c v, c

A:

Q: What net force is required to accelerate an 85 kg sprinter from rest to a speed of 12m/s in 3.0…

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Q: Superman must stop a 120-km/h train in 200 m to keep it from hitting a stalled car on the tracks. If…

A:

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Q: A freight train has a mass of 1.5 x 107 kg. If the locomotivecan exert a constant pull of 7.5 x 105…

A: Force is,

Q: a 1000 kg car is traveling down a 25 degree slope. at the instant the speed is 13 m/s,the driver…

A:

Q: f I were to fart, how much force would my fart need to exert to launch me 10 feet in the air? For…

A: let the upwards acceleration gained due to the fart be a let maximum height reached be H final…

Q: When a 2 lb force acts on a 500 qram object that is able to move freely, the object will have: O a…

A: force = 2 lb mass = 500 g

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A:

Q: The parachute on a race car of weight 8 820 N opens at theend of a quarter-mile run when the car is…

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Q: A high diver of mass 50.2 kg steps off a board 10.0 m above the water and falls vertical to the…

A: Consider the mass of the diver be m, its initial velocity be u, its final velocity be v, the…

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A:

Q: A 10,000 lb mass space craft in deep space is being accelerated at 1.5 g (1g=32ft/s^2). How many…

A:

Q: A girl weighing 45kg is standing on the floor, exerting a downward force of 200N on the floor. The…

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A:

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Q: Let's imagine a block on a sheet of ice, with negligible friction. The block has a mass of 5.00 kg.…

A:

Q: A high diver of mass 63.0 kg Jumps off a board 10.0 m above the water. If her downward motion is…

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Q: The parachute on a race car of weight 8,845 N opens at the end of a quarter-mile run when the car is…

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Q: A bicyclist can coast down a 6.17 degree hill at a constant speed of 6.64 km/h. If the force of air…

A: hill angle = 6.17 ° speed = 6.64 km/h mass = 77.8 kg

Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: