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…

A:

Q: An engine is being used to raise a 89.0 kg crate vertically upward. If the power output of the…

A: Given: mass of crate, m = 89 kg power output of the engine, P = 1620 W vertical distance, h = 18.7 m

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

A:

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: Calculate the minimum average power output necessary for a 55.8 kg person to run up a 12.0 m long…

A:

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

A:

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: 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: 7. A force of 22 N is exerted horizontally on an 18 kg box to move it 7.6 m across the floor. If the…

A: Given that, Applied force, Fa = 22 N The mass of a box, m = 18 kg Distance moved, d = 7.6 m…

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 block attached to a spring, as shown in the Figure, starts at rest with the spring unextended…

A: The work done by the spring will be equal to the potential energy of the spring when it is stretched…

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: A fully loaded, slow-moving freight elevator has a cab with a total mass of 1200 kg, which is…

A:

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

A:

Q: 34. Go "Rocket Man" has a propulsion unit strapped to his back. He starts from rest on the ground,…

A:

Q: 13. A fighter jet is launched from an aircraft carrier with the aid of its own engines and a…

A:

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.…

A:

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

A:

Q: A 65 kg mountain climber climbs through a vertical rope at a constant acceleration from rest to a…

A: Given,  Mass = 65 kg t = 10 s v = 1.25 m/s u = 0 a = (v-u)/t = 1.25/10 = 0.125 m/s2

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

A:

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…

A:

Q: 78. The surfer in the photo is catching a wave. Suppose she starts at the top of the wave with a…

A:

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: 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: 8. Calculate the power required of a 1400kg car under the following circumstances: (a) the car…

A: a) Let the force F required to speed up the car. This can be calculated using Newton’s second law of…

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

A:

Q: A box of mass 4.0 kg hangs by a cable from the ceiling of an elevator. The elevator is moving up at…

A:

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: 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

Q: Calculate the average power necessary for a 55.8 kg person to run up a 5.0 m high, sloped hill, in…

A: The expression for the average power is P=Wt Here,P  is the average power,  iWs the work done by…

Q: Three blocks with masses m1 = 4.31 kg, m2 = 8.73 kg, and m3 = 17.2 kg, respectively, are attached by…

A:

Q: 1001 30.Suppose the ski patrol lowers a rescue sled and victim, having a total mass of 90.0 kg, down…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: A luggage handler pulls a 15 kg suitcase up a ramp inclined at an angle 30⁰ above the horizontal by…

A: Given:-  Mass m=15 kg  angle θ=30° pull up force F=180 N act horizontal force  The coefficient of…

Q: person pushes a m = 2.60 kg carton a distance d = 4.20 m along the floor by a constant for agnitude…

A: Given:-  m= 2.60 kg  d= 4.20 m  F= 16.0 N  θ=30° Find:-  (a) Determine the work done on the carton…

Q: A 18.0-N weight slides down a rough inclined plane which makes an angle of 29.0° with the…

A: Friction force chapter problem.

Q: 6. A 50-kg student who is late for a class runs up two flights of stairs whoOse combined vertical…

A: Given: The mass of the student is 50 kg. The height achieved by the student is 7 m. The time…

Q: A 660kg car is moving with an initial speed of 10.0 m/s. A deer jumps into the road and the driver…

A: Given data: Mass (m) = 660 kg Initial speed (v) = 10 m/s Time (t) = 4.0 sec Need to determine the…

Q: How long will it take an 850-kg car with a useful power output of 40.0 hp (1 hp = 746 W) to reach a…

A: 1) mass = 850 kg Power = 40 hp 1 hp = 746 W initial velocity (u) = 0 m/sfinal velocity (v) = 15m/s