.A bunch of keys is thrown from the top of a 50 m tall building with an initialvelocity of 20 m/s. a) Determine the time for the keys to reach the maximumheight. b) What is the maximum height? c) How much time did it take the keys to reach the ground?

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

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Q: Q.2. A projectile is launched from point O at an angle of 22° with an initial velocity of 15 m/s up…

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Q: 6. A spring loaded launcher is to be created such that from an elevated position of 2.50m high, a…

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Q: 2. A 2000-kg spacecraft is in orbit around the Earth at a distance of 20,000 km from the center of…

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A: Given: The horizontal distance is x=5t. The vertical distance is y=2+6.4t-4.9t2. Part (a) The…

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A: The mass of frontloader is The mass of load is

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A: Given: W - 160 lb L = 50 ft μ=0.5 u - 8 ft/sec R - 8 lb To find: Velocity of wood after 1.5 seconds…

Q: 2. A car starts from rest and travels 8 sec with an acceleration of a = 4-0.3t, then runs for 33 sec…

A: Givena=4-0.3t      when 0≤t<8v= constant    when 8≤t<41      ie. 33+8=41sa=-3.125 m/s2   until…

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A: Since in the 1st case of the question, it is given that the rod is smooth, there will be no friction…

Q: 1. a) A steel ball is dropped from a building's roof and passes a window, taking 0.13 s to fall from…

A: KINDLY ZOOM. THE PHOTO IT IS CLEAR. THE SIZE WAS TOO LARGE TO FIT IN.

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A: Step 1: FBD and set up force equations on the x' and y' axis.…

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A: Given data as per the question Acceleration due to gravity, g=32ft/s2Initial…

Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.