As a block of mass 7 kilograms drops from the edge of a 40-meter-high cliff it experiences a loss of energy due to air resistance of 280 J. At what speed will the rock hit the ground? (give your answer to 1 decimal place)

Q: A 65-kg skier with an initial speed of 11.2 m/s coasts up a height h=2.6-m high rise as shown in the…

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Q: A pole vaulter wishes to clear a 4-m bar. How fast must she run? (Assume that all her kinetic energy…

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Q: Consider a 1,492 kg car cruising at constant speed of 59 km/h. Now the car starts to pass another…

A: Given,Mass of car m=1,492 kg initial speed u=59 km/hru=59 km/hr×518m/s1km/hr=16.39 m/scar has to…

Q: Problem 2: Suppose an elephant has a mass of 2950 kg. How fast, in meters per second, does the…

A: Given: The mass of elephant is m=2950 kg. The mass of the sprinter is M=69.5 kg. The velocity of…

Q: Using energy considerations and assuming negligible air resistance, show that a rock thrown from a…

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Q: Calculate the kinetic energy in Joule, of a car of mass 1000kg travelling at 115km/h.

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Q: There is a 2 car accident. Car 1 (1550 kg) slides on ice at 15m/s and it runs into another car…

A: Mass of car 1 is m1 = 1550 kg Speed of car 1 initially is u1 = 15 m/s Mass of car 2 is m2 = 3250 kg…

Q: A 57-kg pole vaulter running at 11 m/s vaults over the bar. Her speed when she is above the bar is…

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Q: A 20 kg chair has 250 J of potential energy relative to the ground. If the chair is dropped from its…

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Q: In the figure, a frictionless roller coaster car of mass m - 815 kg tops the first hill with speed…

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Q: What is the kinetic energy of a 30 kg object travelling at 20 m/s? O 12kJ O0.12 kJ O 120 kJ O 12 k

A: Part (1): Given: The mass of the object is 30 kg. The speed of the object is 20 m/s.

Q: thermal energy due to friction

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Q: onsider a lightbulb rated for a power Pbulb = 60 W. This lightbulb consumes a certain amount of…

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Q: A roller coaster car has a massive 320 kg. Starting from the rest the car requires 3.5×10^5 joules…

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Q: A rollercoaster cart with a total mass of 500kg is at the top of a hill moving at 2m/s. Assuming no…

A: Given:-  The mass of the rollercoaster cart is m = 500 kg  The speed of the cart at the top of the…

Q: A cyclist drives off a 30 m high cliff. If her initial speed is entirely horizontal, how fast will…

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Q: 102 kg man is skiing across level ground at a speed of 9.5 m/s when he comes to the small slope 1.4…

A: Given:- The mass of the person m = 102 kg  The speed of the skis at the ground level vg = 9.5 m/s…

Q: A car with a mass of 1.5 x 103 kg accelerates at 0.74 m/sec2 for 60 seconds. How fast is it going in…

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Q: How much energy is lost to a dissipative drag force if a 60-kg person falls at a constant speed for…

A: Given data :  Mass of the person , m = 60 kg  Distance, S = 15 meter  Falls at constant speed  To…

Q: How long will it take a 742-kg car with a useful power output of 43.2 hp (1 hp equals 746 W) to…

A: Mass of car (M) = 742 kg  Output power of car = 43.2 hp  Power (P) = 43.2(746W) = 32227.2 W  Speed…

Q: 14 kg object is dropped from rest on a surface inclined 31º from the horizontal and slides 10.9 m to…

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Q: The car weighing 1.0 × 10³ kg has an engine with a power of 80 kW. What is the biggest acceleration…

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Q: A bowling ball is dropped from the top of a building that has a height of ℎ=104m.  (a)Using energy…

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Q: How long will it take a 921-kg car with a useful power output of 57.6 hp (1 hp equals 746 W) to…

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Q: A 97-g cup falls from a kitchen shelf and shatters on the ceramic tile floor. Assume that the…

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Q: A 60.0 kg skier with an initial speed of 13.0 m/s coasts up a 2.50 m high rise as shown in the…

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Q: A 2kg wooden block is pushed against a spring (not attached) compressing it through 20cm from its…

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Q: How long will it take a 751-kg car with a useful power output of 57.5 hp (1 hp equals 746 W) to…

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Q: How fast does a 48kg tiger running if it has a kinetic energy of 15 kilojoules? Express your answer…

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Q: In a roller coaster the ride includes a vertical drop of 120 m. Suppose that the coaster  has a…

A: Given, Height of fall,h=120 m Speed at top,u=4 m/s

Q: The top of a ski hill sits at an altitude of 2000 m. If you were to "Frenchfry" (go straight down…

A: Here, we have to Use Conservation of energy As difference in altitude is given, we just have to…

Q: Calculate the kinetic energy in Joule, of a car of mass 1300kg travelling at 50km/h.

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Q: In the figure, a frictionless roller coaster car of mass m = 810 kg tops the first hill with speed…

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Q: A 50 kg object has 1,800 J of potential energy when it is released and allowed to fall to the…

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Q: A 2 kg rock is thrown vertically upward with 500 J of kinetic energy from a height of zero.…

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Q: An artillery shell is fired at a target 200 m above the ground. When the shell is 100 m in the air,…

A: In order to answer this issue, we must ascertain the artillery shell's velocity at the time of…

Q: A 82 kg wooden block is pushed against a spring (not attached) compressing it through 25cm from its…

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Q: ove the bar is 1.5 m/s.

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Q: What is the kinetic energy of a 30 kg object travelling at 20 m/s? O 12 kJ O.12 kJ O 120 kJ O 12 kJ

A: Given data: Mass (m) = 30 kg Velocity (v) = 20 m/s Required: Kinetic energy (KE)

Q: Suppose the mass of a loaded elevator is 1700 kg.What force, in newtons, must be supplied by the…

A: Given mass of a loaded elevator is 1700 kg We have to find What force, in newtons,much work, in…

Q: A 59-kg pole vaulter running at 10 m/s vaults over the bar. Her speed when she is above the bar is…

A: The given values are,

Q: A 45-kg skydiver jumps out of an airplane and falls 340 m, reaching a maximum speed of 51 m/s before…

A: Solution: