In an iconic movie scene, Forrest Gump (https://openstaxcollege.org/l/21ForrGumpvid) runs around the country. If he is running at a constant speed of 3 m/s, would it take him more or less energy to run uphill or downhill and why?

Q: For saving energy, bicycling and walking are far more efficient means of transportation than is…

A: a. the energy consumption by the person in walking is

Q: a 75 kg cross country skier is climbing a 3 degree slope at a constant speed of 2.0 m/s and…

A: The mass m=75kg  The speed =2.0m/s To find the final velocity on the level ground

Q: Moving at an initial speed of vi=2.00m/s, Jimmy slides from a height of h=5.00m down a straight…

A:

Q: An 85.1-kg dad climbs to the second floor of his house. His gravitational potential energy increases…

A: Given data: Increase in PE of Dad = 1.95*103 J Mass of dad (M) = 85.1 kg ass of daughter (m) = 21.4…

Q: A motor car of mass 800 kg is dlimbing up an incline of 8= 10 to the horizontal. 50 m FIG. 5 1)…

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Q: From the figure, the system starts at rest with the spring unextended. Taking m=0.10, when the…

A: Work done by force F on spring is W=12kx2…

Q: A 5.0-kg block is pushed 3.0 m up a vertical wall with con- stant speed by a constant force of…

A: Figure shows the force acting on the block.

Q: A child of mass m = 23 kg slides down a slide of height h = 2.7 m without friction. Let…

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Q: A 0.21-kg apple falls from a tree to the ground, 4.0 m below.Ignoring air resistance, determine the…

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Q: A 0.50 kg banana is thrown directly upward with an initial speed of 4.00 m/s and reaches a maximum…

A: Calculate the total initial energy of the banana.

Q: A record for stair climbing was achieved by a man who raced up the 1600 steps of the Empire State…

A: Given data from question,  Number of steps = 1600 Height = 320m Time taken = 10.2min Weight of man =…

Q: i. A 5.0-kg block is pushed 3.0 m up a vertical wall with con- stant speed by a constant force of…

A: Given  Mass of block = 5.0 kg  Angle =30°  coefficient of friction=u= 0.3    Displacement =d= 3.0m…

Q: Using the principle of conservation of mechanical energy, calculate the maximum height achieved by a…

A: Weight of ball = 5 N Velocity of ball = 12 m/s Maximum height =?

Q: A 1700 kg car coasts on a horizontal road with a speed of 23 m/s. a) How much work must be done by…

A: Given data: Mass (m) = 1700 kg Initial velocity (v0) = 23 m/s Final velocity (vf) = 17 m/s Required:…

Q: A 240-kg roller coaster reaches the top of the steepest hill with a speed of 5.60 km/h. It then…

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Q: Consider a tug-of-war as in Figure CQ5.1, in which two teams pulling on a rope are evenly matched so…

A:

Q: A 135g Frisbee is thrown from a point 1.05 m above the ground with a speed of 12.00 m/s. When it has…

A: Given m=135g H1=1.05m H2=2.50m V1=12.00m/s V2=10.4831m/s   Work done on the Frisbee can be defined…

Q: An elevator cab of mass m = 500 kg is descending with speed vi = 4.0 ms-1 when its supporting cable…

A: Mass, m = 500 kg Speed vi = 4.0 ms-1  Distance d=12 m Also given that supporting cable begins to…

Q: As a young man, Tarzan climbed up a vine to reach his tree house. As he got older, he decided to…

A: To determine: A young man Tarzan climbed up a vine to reach the tree house, what did the king of…

Q: A 98 kg bicyclist traveling 15 m/s coasts up a 5 m high incline. After reaching the top of the…

A:

Q: In an environment where air friction is negligible, an object is thrown upwarc with a velocity of 50…

A: Solution: Given that the object is thrwon vertically up, the potential energy ration at two…

Q: While a 33 kg girl jumps on a trampoline, her speed is measured at different points and it is…

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Q: Same skier as in the previous question When she reaches the jump, she is launched at an angle of 45°…

A:

Q: At Schlitterbahn, a 75.0 kg person rides a 12.0 m high water slide. If dissipative forces do -6.25 x…

A: Given m=75kg h=12m Ed=-6.25*10^3J To find the velocity at the bottom of the slide :

Q: Find the work done in joules by gravity as an object of the mass m=14 kg is raised up at constant…

A: Mass of object m = 14 kg Initial height h1 =34 m Final height h2 = 75 m g = 10 m/s²     Concept…

Q: A block slides across a rough horizontal tabletop. Which of the following is/a changed by the work…

A: Given information :- A block slides on a rough horizontal table and we need to think about the…

Q: Suppose you are driving in the High Sierras from Mammoth Mountain to the Owens Valley 2012 m below.…

A: Required : The approximate final speed.

Q: While training for breeding season, a 460 gram male squirrel does 29 pushups in a minute, displacing…

A: Given:- While training for breeding season, a 460 gram male squirrel does 29 pushups in a minute…

Q: he work done by a conservative force around a closed path is nonzero.  T  F ??

A: A conservative force is a force done in moving a particle from one point to another, such that the…

Q: A 98 kg bicyclist traveling 15 m/s coasts up a 5 m high incline. After reaching the top of the…

A: Given: Mass of bicyclist, m=98 kg Speed of bicyclist at bottom, u=15 m/s Speed of bicyclist at top…

Q: • A 1300-kg elevator is lifted at a constant speed of 1.3 m>s througha height of 22 m. How much…

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Q: The Huascaran mountain is a highly dangerous mountain, given that there are large rocks on the ice,…

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Q: A 55 kg motorcyclist is flying through the air at 72 km/h at the apex of the jump 8.3 m above the…

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Q: Consider a tug-of-war as in Figure CQ5.1, in which two teams pulling on a rope are evenly matched so…

A: Formula for the work done is:

Q: A 55 kg boy swings on a single strand of rope 9.50m long and passes the lowest point at a speed of…

A: Given, Mass of boy,m=55 kg Length of rope,L=9.5 m Elevation of lowest point,h1=0.7 m Speed at lowest…

Q: A person holds a bundle of hay over his head for 30 minutes and gets tired. Has he done some work or…

A: Work is done whenever the given two conditions are satisfied: a force acts on the body. there is a…

Q: Suppose the ski patrol lowers a rescue sled carrying an injured skiier, with a combined mass of 77.5…

A: In this question we have to answer how much work, in joules, is done by the rope on the sled over…

Q: At an amusement park , a swimmer uses a water slide to enter the main pool. If the swimmer starts at…

A: initial speed = 0 m/s vertical height = 2.81 m Surface = frictionless

Q: The 2018 Pyeongchang gold medalist winner in a large hill ski jumping discipline, Kamil Stoch,…

A: Applying conservation of energy to calculate the final speed of the man…

Q: Starting from rest, Tarzan swings on an vine that is initially at an angle of 90 ° with the vertical…

A: Given data:  Initial velocity (Vi) = 0 m/s Initially vine is horizontal  Length of vine (L) = 10 m…