A snow boarder starts from rest at the top of a mountain. He boards a vertical distance of 50 m down the mountain, and then he goes off a jump with a speed of 20 m/s. What must be the vertical height of the jump? Assume no friction is present.

Q: A 59.0 kg cheetah accelerates from rest to its top speed of 32.7 m/s   (a) How much net work (in…

A: a)Work done is equal to change in kinetic energy.

Q: A 63kg skier coasts down a 30◦ slope. At the top of the slope her speed is 3.6m/s. She accelerates…

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Q: lock of mass m = 2.9 kg is placed on a rough incline surface making an angle θ = 13.8°  with…

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Q: One boat tows another boat by means of a tow line, which is under a constant tension of 465 N. The…

A: Given data: Tension force (F) = 465 N Velocity (v) = 4.60 m/s Time (t) = 1.10 min Required: The work…

Q: A 3.80 kg block is pulled up a frictionless inclined plane by a 53.O N force that is parallel to the…

A: Given data The mass of the block is m = 3.80 kg. The force on the inclined plane is F = 53 N. The…

Q: A hummingbird is able to hover because, as the wings move downward, they exert a downward force on…

A: Given data: The wings move through a distance =2.9 cm The wings beats = 85 times per second The mass…

Q: You have a 750-kg roller coaster that starts from rest at a height of 37.5m above the ground. The…

A: Mass of the roller coaster (m)=750 kg Height of roller coaster above the ground (H)=37.5 m Length of…

Q: A force of 4 N is applied to an object at an angle of 40 degrees to the X-axis. The object slides in…

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Q: You push on a box of 10kg with a force F = (20i −10j )N. It moves on a rough surface (uc = 0.1) over…

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Q: An asteroid is moving along a straight line. A force acts along the displacement of the asteroid and…

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Q: A cable exerts a constant upward tension of magnitude 2.70 ✕ 104 N on a 2.40 ✕ 103 kg elevator as it…

A: Given data: The tension in cable is T=2.70✕104 N. The mass of elevator is m=2.40✕103 kg. Distance…

Q: When an 81.0 kg adult uses a spiral staircase to climb to the second floor of his house, his…

A: Given: mass of adult person, M = 81 kg mass of child, m = 18 kg  change in gravitational potential…

Q: hown in the figure below, a 2.25 kg block is released from rest on a ramp of height h. rough patch…

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Q: A cable exerts a constant upward tension of magnitude 2.58 x 10^4 N on a 2.40 x 10^3 kg elevator as…

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Q: As shown in the figure below, a 2.25 kg block is released from rest on a ramp of height h. rough…

A: Mass of object (m) = 2.25 kglength of rough patch (s) = 15.0 cm = 0.150 mμk = 0.710.velocity after…