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The Velocity-time graph below shows the motion of a cyclist:
(a) Describe in words the motion of the cyclist?
(b) Calculate the acceleration of the cyclist from: (i) A to B (ii) B to C (iii) C to D
(c) If the cyclist travelled a total distance of 200m, calculate the total time for this motion.
A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The lifting force does work in raising the helicopter. An 730-kg helicopter rises from rest to a speed of 8.8 m/s in a time of 3.9 s. Through this time it climbs t..
A sled is pulled with a horizontal force of 20 N along a level trail, and the acceleration is found to be 0.35 m/s2. An extra mass m = 4.2 kg is placed on the sled. If the same force is just barely able to keep the sled moving, what is the coeffic..
What is the ideal banking angle for a gentle turn of 1.80 km radius on a highway with a 110 km/h speed limit (about 68 mph), assuming everyone travels at the limit
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A drum rotates around its central axis at an angular velocity of10.8 rad/s. If the drum then slows at a constant rate of 8.68rad/s2, find through what angledoes it rotate in coming to rest
When a certain photoelectric material is illuminated with red light (?=715) and then blue light (?=400), calculate the work function of the material
a raindrop inside a thundercloud has charge -8e. what is the electric force on the raindrop if the electric field at
A high-voltage power line carries a current of 124 at a location where the Earth's magnetic field has a magnitude of 0.59 G and points to the north, What direction does the magnetic force point
On a frictionless table, a glob of clay of mass 0.42 kg strikes a bar of mass 1.98 kg perpendicularly at a point 0.39 m from the center of the bar and sticks to it. At what angular speed does the bar/clay system rotate about its center of mass afte..
A rocket is fired at a speed of 71.0 m/s from ground level, at anangle of 56.0 ° above the horizontal. The rocket is firedtoward an 20.6-m high wall, which is located 20.0 m away.
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