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A model rocket is launched straight upward with an initial speed of 50.0 m/s. It accelerates with a constant upward acceleration of 1.50 m/s2 until its engines stop at an altitude of 150 m.
(a) What is the maximum height reached by the rocket?
(b) How long after lift-off does the rocket reach its maximum height?
(c) How long is the rocket in the air?
A 270-N sphere 0.20 m in radius rolls without slipping 6.0 m down a ramp that is inclined at 34° with the horizontal. What is the angular speed of the sphere at the bottom of the slope if it starts from rest?
The last stage of a rocket is traveling at a speed of7800 m/s. This last stage is made up of two parts that are clamped together, namely, a rocket case with a mass of 300.0 kg and a payload capsule by a mass of220.0 kg. When the clamp is released, a ..
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A capacitor is connected across the terminals of an ac generator that has a frenquency of 460 Hz and supplies a voltage of 24 V. When a second capacitor is connected in parallel with the first one, the current from the generator increases by 0.18 A. ..
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a luggage conveyor belt is inclined at at an angle 14.8 degrees and has length 330m. the belt moves at a speed of
question anbsp skier of mass 70kg is pulled up a slope by a motor driven cable. how much work is required to pull him
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