13. During a workout, football players ran up the stadium stairs in 75 s. The distance along the stairs is 83 m and they are inclined at a 33° angle. If a player has a mass of 82 kg, estimate his average power output on the way up. Ignore friction and air resistance.

Q: Multiple-Concept Example 13 presents useful background for this problem. The cheetah is one of the…

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Q: If a 1300 kg car can accelerate from 30 km/h to 60 km/h in 3.9 s , how long will it take to…

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Q: 1. If the force has a magnitude Fp = 20 N and makes an angle of 30° to the ground. Calculate the…

A: The work done by a force is given by: WD = force×displacementW =F→.s→ = Fscos(θ)Given:F =20 Ns =…

Q: A 67 kg yak has an average power output of 200 W. How long can a yak climb a 3km high mountain?…

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Q: How much work does an elevator motor do raising a mass of 1176 kg vertically 15.3 m? I solved this…

A: To raise the mass the elevator motor must work against gravity. From conservation of energy the work…

Q: 4. In a time t=18.00 s, a 60.0-kg student runs at a steady pace up two flights of stairs whose…

A: Given data:  Time (t) = 18.00 s Mass (m) = 60.0 kg Vertical height (h) = 7.80 m Required: Power…

Q: A 2400-kg pile driver is used to drive a steel beam into the ground. The pile driver falls 3.00 m…

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Q: What average power does a 1,565 kg car need to go from 0 to 12.6 m/s in 6.86 seconds? Assume a…

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Q: 3. A record was set for stair climbing when a man ran up the 2400 steps of the Empire State Building…

A: Given:-  A record was set for stair climbing when a man ran up the n = 2400 steps. The time taken to…

Q: A 62.0 kg woman runs up a flight of stairs having a rise of 4.28 m in a time of 4.20 s. What average…

A: Given data: Mass (m) = 62 kgHeight (h) = 4.28 mTime (t) = 4.20sRequired:The average power (P)

Q: A new record for running the stairs of the Empire State Building was set on February 3, 2003. The 86…

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Q: 4. A 230-kg roller coaster reaches the top of the steepest hill with a speed of 6.40 km/h. It then…

A: To solve this problem we use the concept that total energy of the system remains constant

Q: 8. A child pulls a friend in a little red wagon with constant speed. If the child pulls with a force…

A: Let's explain this problem in detail:   A child pulls a friend in a little red wagon with a force of…

Q: 7. A 210-kg roller coaster reaches the top of the steepest hill with a speed of 5.20 km/h. It then…

A: The expression for the force acting on the roller coaster along the incline of the hill is,

Q: Paraaadiip

A: Number: 2419.372     Units: WExplanation:

Q: A 2400-kg pile driver is used to drive a steel beam Into the ground. The pile driver falls 6.00 m…

A: mass of pile driver (m) = 2400 kg Height of pile driver before coming in contact with top of beam…

Q: A particle is subject to a force Fx that varies with position as in Figure. Find the work done by…

A: As work done is equal to  W=Fd Therefore from the given plot work done is simply area under the…

Q: 3. A sled of mass 70 kg starts from rest and slides down a 10° incline 70 m long. It then travels…

A: The work done by the system on the sled is W=700.76 J

Q: Three objects with masses m1 = 6.2 kg, m2 = 14 kg, and m3 = 17 kg, respectively, are attached by…

A: Given:Mass of first object  is 6.2 kg.Mass of second object is 14 kg.Mass of third object is 17…

Q: A 600-N Marine ir 10.0-m vertical ro rc

A: Given: Force, F=600 N Distance=10 m time=8 sec

Q: Question 9. The cheetah is one of the fastest accelerating animals, for it can go from rest to 9.4…

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Q: A 70 lb child runs uphill, gaining 50 feet in elevation in 14 seconds. Calculate the average power…

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Q: 1) A freight plane has a total mass of 4.00 x 105 kg (including cargo). It starts from rest at sea…

A: Given, Mass of freight plane (M) = 4×105kg  Initial speed (u)= 0 m/s  Initial height(hi) = 0 m (…

Q: A 57 kg man runs up a flight stair having a rise of 4.5 m in 3.5 s. what average power must he…

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Q: 13. The only force acting on a 2.0 kg canister that is moving in an ry plane has a magnitude of 5.0…

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Q: 3. Problem 7.49 of Chapter 7. A 15.0-kg stone slides down a snow-covered hill, leaving point A with…

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Q: What is the power output for a 60 kg woman who runs up a 3.00 m high flight of stairs in 3.50 s.…

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Q: 4. A large water tank is filled by pumping water into it from a reservoir below, using electric…

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Q: Your brand new 75.0-kg refrigerator falls out of the back of your truck while you are traveling up a…

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Q: A 1400 kg car starts from rest and accelerates uniformly to 19.5 m/s in 20s. a)Find the average…

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Q: A 6860 kg car traveling at 41 m/s is at the foot of a hill that rises 491 m in 1.7 km. At the top of…

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Q: If a 1300 kg car can accelerate from 30 km/h to 60 km/h in 3.9 s , how long will it take to…

A: Mass of car, m = 1300 kg Velocities are,  v1 = 30 km/h = 30*(1000m/3600s) => v1 = 8.33 m/s v2 =…

Q: An advertisement claims that a(n) 1600 kg car can accelerate from rest to 26 m/s in 8.4 s. Given:…

A: Given Mass of the car is given as m=1600 kg Initial speed of the car is vi=0 Final speed of the car…

Q: Multiple-Concept Example 13 presents useful background for this problem. The cheetah is one of the…

A: Solution:-Given thatInitially at rest, initial speed (u)=0final speed (v)=29 m/stime (t)=5.15 smass…

Q: In a dam, water is flowing at the rate of 1400 kg/s and falls from 40 m height. The power is…

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Q: 2. While training for the upcoming UAAP season, a 60-kg athlete does 30 pushups in a minute,…

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Q: 3. An elevator car has a mass of 1 600 kg and is carrying passengers having a combined mass of 200…

A: Given :mc=1600kgmp=200kgFriction = 4000 NP

Q: 1. Two blocks are connected by a very light string passing over a massless and frictionless pulley.…

A: Given:-  Two blocks are connected with the string and pulley and the weight of the W1= 12 N block is…

Q: 4. A constant force of 20.0 N i pushes a 1.50 kg mass over a distance of 5.00 m. in the x-direction.…

A:

Q: Multiple-Concept Example 13 presents useful background for this problem. The cheetah is one of the…

A: Given : Mass of cheetah (m) is 99 kg Final velocity (v) is 26.6 m/s and time (t) is 4.02 sec.

Q: So imagine a wombat named Horace at rest. It's somehow on the top of a long telephone pole. It has a…

A: Ans:- Image-1