A 1000kg helicopter hovers over a forest fire and starts to squirt water downward with a speed of 10m/s at a rate of 40kg/s. What is the initial upward acceleration on the helicopter when it first starts to release the water

Q: An airplane is delivering food to a small island. It flies 100 mm above the ground at a speed of 140…

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Q: You were riding a fully air-conditioned bus (all windows and doors are closed) from Seoul to Incheon…

A: A balloon inside a bus

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Q: ighing 130 kg carries a 21-kg basket and is descending with a constant velocity of 21.0 m/s. A…

A: The mass of the balloon is M = 130 kg  The  mass of the basket is m = 21 kg  both descending with…

Q: Io, a satellite of Jupiter, is the most volcanically active moon or planet in the solar system. It…

A: Acceleration due to gravity on lo (g') = 1.81 ms2Let the mass of fragment = m

Q: The world's highest fountain of water is located, appropriately enough, in Fountain Hills, Arizona.…

A: The height, h=560 ft   The acceleration due to gravity, g=32 ft/s2

Q: a) A wind turbine with two or four hollow hemispherical cups connected to a pivot is commonly uscd…

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Q: Frozen rain with spherical shape falls from 3.00 km, what is its velocity if the diameter is 0.3 mm?…

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Q: Suppose you are in a rocket with no windows, traveling in deep space far from other objects. Without…

A: (A). In this case it is not possible to determine that the rocket is moving with constant velocity…

Q: A child with mass of 16.5 kg stands on the edge of a park bench and leaps into the air. Her initial…

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Q: As shown in picture, the person is twirling a garden hose over his head. The hose lies in a…

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Q: The position of a stone thrown vertically up is y(t)=y0+ v0. t-g.t^2 where v0=10m/s is the initial…

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Q: You and four of your friends are all interested in getting out of town for a break. Two of your…

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Q: Firemen use a high-pressure hose to shoot a stream of water at a burning building. The water has a…

A: Initial velocity u = 25 m/s Time taken T = 3 sec Distance to reach the building (horizontal…

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Q: High cholesterol in the blood can cause fatty deposits called plaques to form on the walls of blood…

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Q: A cheetah leaps horizontally from a 5-meter high rock at a speed of 3.5 m/s. How far from the base…

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Q: A student pushes a 12-kg block on a frictionless, horizontal surface If the block is initially at…

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Q: A 0.20-km wide river has a uniform flow speed of 3.0 m/s toward the east. A boat with a speed of 8.0…

A: river width d = 0.20 km = 200 m River flow speed Vr = 3.0 m/s towards east Boat speed v = 8 m/s

Q: On a manned orbital mission to a planet in the far, far reaches of the galaxy, the brave astronauts…

A: From kinematics, the equation is,

Q: A projectile is launched horizontally with a speed of 125 m/ s, at a height of 68 m above sea level.…

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