An 64 kg man runs up stairs and reaches 9 mheight for 12 s. what is his power? Use g = 9.8 m/s2 Calculate answer to one decimal.

Q: A 63 kg skier starts from rest at height H = 17 m above the end of a ski-jump ramp (see the figure).…

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Q: A 0.20 kg ball is thrown straight up from the edge of a 30.0 m tall building at a speed of 22.0m/s.…

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Q: A child and sled with a combined mass of 52.5 kg slide down a frictionless hill that is 7.08 m high…

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Q: A student who is 5'5" and weighs 52kg ran up a 4.08m high staircase in 6.3s. Determine the…

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Q: chain 67 meters long whose mass is 28 kilograms is hanging over the edge of a tall building and does…

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Q: Tarzan wants to use a vine to swing over a canyon to get to the other side of a cliff. He is able to…

A: Given: The maximum force on the vine is, T = 1270 N. The mass of the tarzan is, m =81.1 kg. The…

Q: A child on a sled with a total mass of 58.0 kg slides down an icy hillside with negligible friction.…

A: According to law of conservation of energy, when the sled starts sliding from the hilltop, the…

Q: A rock with a mass of 2.40 kg is moving with velocity (6.40î − 2.40ĵ) m/s. What is the…

A: 1) Determine the kinetic energy of the rock.

Q: Gayle runs at a speed of 3.65 m/s and dives on a sled, initially at rest on the top of a…

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Q: Find the scalar product of the vectors shown.

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Q: A child on a sled with a total mass of 45.0 kg slides down an icy hillside with negligible friction.…

A: The vertical height of the hill is about 0.46 m. Here, we use conservation of energy and solve for…

Q: 5. The skateboarder in the drawing starts down the left side of the ramp with an initial speed of 6…

A: Given,

Q: saltwater crocodile (Crocodylus porosus) with a mass of 521 kg, is seen chasing prey and reaching a…

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Q: A stone with a mass of 2.40 kg is moving with velocity (5.20î – 1.80ĵ) m/s. (HINT: v2 : () What is…

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Q: A 0.1 kg apple hits the ground with a speed of 17 m/s. From what height was the apple dropped? I am…

A: Given  Mass(m) = 0.1 kg  Speed at the ground (v) = 17 m/s  Let , initial height of apple is 'h' .…

Q: 31. A 1500 kg car skids to a halt on a wet road where μk = 0.50. How fast was the car travel- ing if…

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Q: A 5 kg ball falls from height of 28 m. What willhe potential energy of the ball after 1.2 second?…

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Q: A billiard ball of mass 0.15 kg is uniformly accelerated from rest and travels 64 cm in 0.8 s.…

A: The mass of the billiard ball, m=0.15 kg The displacement of the ball, ∆x=64 cm = 0.64 m The time…

Q: A 1.72 kg box falls from a height of 2.19 m onto a large capacity spring scale with a spring…

A: Given' Mass of box, m=1.72 kg height ,h=2.19 m spring constant, k=1.75 X 105 N/m

Q: A sled, of mass 18.6 kg, is stationary when it starts to slide down an icy hill.  The hill is 13.0 m…

A: Given data:  Initial velocity (u) = 0 m/s Height (h) = 13.0 m Required: The speed of the sled at the…

Q: A 60.0 kg skier with an initial speed of 15 m/s coasts up a 2.50 m high rise as shown in the figure.…

A: By work energy theorem  (1/2)×m×(vf2-vi2) = -mgh - ukmgh  (1/2)×(vf2- 152) = -9.8×2.5×(1+.39)  vf2 =…

Q: A car accelerates from rest to 14 m/s in 5 seconds on a horizontal road under perfect conditions. If…

A: Initial velocity=0m/s Final velocity=14m/s Time=5sec

Q: Problema 04: ¿Cuánto trabajo neto se debe realizar para acelerar un automóvil de 1000 kg de 20 m/s a…

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Q: A dog with a mass of 57.0 kg slides down a wet slope with negligible friction. The dog starts from…

A: Given: Mass of dog m=57 kg Initial velocity u =0 m/s Final speed v=2.10 m/s

Q: An 69 kg man runs up stairs and reaches 10 mheight for 14 s. what is his power? Use g = 9.8 m/s2…

A: Given Mass m = 69 kg Height h = 10 m time t = 14 s We have to find out the power

Q: A farmer builds three sections of a fence, as shown in the figure, where L = 10.00 m, and gets…

A: Given data: L=10.0 m

Q: A 2kg hockey puck on a frozen pond is given an initial speed of 20 m/s. If the puck always remains…

A: Data Given ,  Mass of the hockey puck ( m ) = 2 kg  Initial speed ( u ) = 20 m/s Displacement ( s )…

Q: A trap-jaw ant snaps its mandibles shut at very high speed, a good trait for catching small prey.…

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Q: A stone with a mass of 2.20 kg is moving with velocity (5.401 – 2.40ĵ) m/s. (HINT: v² = ✓ · .v.) (a)…

A: The objective of the question is to find the kinetic energy of the stone at a given velocity and the…

Q: A force of 16 lb is required to hold a spring stretched 2 in. beyond its natural length. How much…

A: According to Hook's law, the applied force F equals a constant k times the change in length x F = kx…