How high a hill can a car coast up (engine disengaged) if work done by friction is negligible and its initial speed is 110 km/h? (b) If, in actuality, a 750-kg car with an initial speed of 110 km/h is observed to coast up a hill to a height 22.0 m above its starting point, how much thermal energy was generated by friction? (c) What is the average force of friction if the hill has a slope 2.5 degrees above t

Q: (a) How high a hill can a car coast up (engine disengaged) if friction is negligible and its initial…

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Q: A 1000 N crate slides 11 mm down a ramp that makes an angle of 31 ∘∘ with the horizontal. If the…

A: The given values are, w=1000 Nd=11 mθ=31°

Q: A woman fires a rifle with barrel length of 0.6200 m. Let (0, 0) be where the 150 g bullet begins to…

A: To calculate the work done by the gas on the bullet, we need to integrate the force over the…

Q: (a) How high a hill can a car coast up (engine disengaged) if friction is negligible and its initial…

A:

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

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Q: When jogging at 13 km/h on a level surface, a 70-kg man uses energy at a rate of approximately 850…

A: We have to determine the power used by man when jogging up slope

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

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Q: Samantha wishes to maintain her weight and goes to the gym to work off the calories she consumed at…

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Q: A 75-g bullet is fired from a rifle having a barrel 0.580 m long. Choose the origin to be at the…

A: Mass of the bullet , m = 75 gm = 0.075 kg  Rifle barrel , x = 0.580 m F(x) = 16000 + 10000x -…

Q: For how much time can a 70 kg person ride a bike at 15 km/hr on a flat path, using only the energy…

A: Given: The metabolic power P = 480 W Mass of a rider m = 70 kg. Velocity of rider v = 15 km/hr =…

Q: A crate of mass 9.4 kg is pulled up a rough incline with an initial speed of 1.44 m/s. The pulling…

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Q: (a) What is the efficiency of an out-of-condition professor who does 2.10 x 105 J of useful work…

A: A) work = 2.1 × 105 J      Food Energy = 500×1000 cal                             = 21× 105 J  B)…

Q: Calculate the work done if a particle is moved along a path AB−BC−CD−DE−EF−FA, as shown in the…

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Q: To dramatize the loss of energy in an automobile when it stops, consider a car having a weight of…

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Q: (a) How high a hill can a car coast up (engine disengaged) if friction is negligible and its initial…

A: Given: Initial speed of the car = 90 km/hr Mass of the car = 750 Kg Height of the hill = 16 m Angle…

Q: A 25.0 kg child slides down a long slide in a playground. She starts from rest at a height h₁ of…

A: Given data:  Mass (m) = 25.0 kg At Height (h1) = 22.00 m, speed (V1) = 0 m/s At height (h2) = 12.00…

Q: (a) What is the efficiency of an out-of-condition professor who does 1.90 x 105 J of useful work…

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Q: (a) What is the efficiency of an out-of-condition professor who does 2.10 x 10° J of useful work…

A: a) We know that, efficiency= (output/input)x100 So here output is 2.10×10^5 joule and input is…

Q: A student evaluates a weight loss program by calculating the number of times he would need to dlimb…

A: Given: Total height , h=16.0 m Weight fat lose , m=0.45 kg 1 kg of fat can produce chemical 3.77×107…

Q: (a) How high (in m) a hill can a car coast up (engine disengaged) if friction is negligible and its…

A: Initial speed=76km/h

Q: (a) What is the efficiency of an out-of-condition professor who does 2.10 ✕ 105 J of useful work…

A: Part(a): Work-done is W=2.10×105 J Food energy is E=510 kcal Note: 1 kcal=4184 J Find: Efficiency of…

Q: Samantha wishes to maintain her weight and goes to the gym to work off the calories she consumed at…

A:

Q: (a) What is the kinetic energy in joules of a 1150-kg automobile traveling at 79 km/h? =____ Joules…

A: a. the kinetic energy in joules  is  KE=12mv2=121150kg79km/h×0.2777m/s1km/h2=2.76×105 J

Q: (a) How much work is done when you push a crate horizontally with 150 N across a 20 m school floor?…

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Q: ove the bar is 1.5 m/s.

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Q: A student evaluates a weight loss program by calculating the number of times he would need to climb…

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Q: A woman files a rifle with barrel length of 0,6600 m. Let (0, 0) be where the 150 g bullet begins to…

A: To calculate the work done by the gas on the bullet, we need to integrate the force over the…

Q: If, in actuality, a 750-kg car with an initial speed of 116 km/h is observed to coast up a hill and…

A: mass of car (m) = 750 kg initial velocity (u) = 116 kmhr maximum height (h) = 24.5 m

Q: (a) What is the efficiency of an out-of-condition professor who does 2.30 ✕ 105 J of useful work…

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Q: Samantha wishes to maintain her weight and goes to the gym to work off the calories she consumed at…

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Q: A child on a swing is released from rest at an angle of 60º from vertical.  At the low point (0º…

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Q: Flying with a speed of VV∞ = 120 m/s at an altitude of 2000 m, where the density is 1.007 kg/m3, the…

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