(a) How long would it take a 1.50 × 105 -kg airplane with engines that produce 100 MW of power to reach a speed of 250 m/s and an altitude of 12.0 km if air resistance were negligible? (b) If it actually takes 900 s, what is the power? (c) Given this power, what is the average force of air resistance if the airplane takes 1200 s? (Hint: You must find the distance the plane travels in 1200 s assuming constant acceleration.)

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A:

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A:

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A:

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A:

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A: Motor would lift 20kg to height of 10m in 1.96 seconds

Q: f the hand does 40 J of work on the 2.5 kg cart, how fast will it travel? If the person does 480…

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

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A: Given :      Mass of the climber, m = 72 kg      Height of the hill, h = 345 m      time taken, t =…

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A:

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Q: What average mechanical power (in W) must a 60.0 kg mountain climber generate to climb to the summit…

A: solution as

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A: Given that: m=76.5 kgg=9.8 m/s2h=405 mt=46 min=2760 sec W=?

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A: According to work energy theorem, the work required to climb the hill is,Substitute the values,

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A:

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A:

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A:

Q: how much work is done on a cart by a force F=(10i+5j)kN that causes a displacement of d=(2i+0j)m?

A: The work done is given by  W =  F→ . d→ where, F is the force vector and d is the displacement…