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Usain Bolt, the fastest man in the world, stands at the beginning of an infinite flight of stairs, waiting for a nearby cannon to shoot a tennis ball straight up into the air. If he can climb one flight of stairs every 3 seconds, each of which is 10m tall, and the cannon shoots the tennis ball with an initial velocity of 250m/s:
A. How many flights of stairs can he climb before he'll need to lean out the window to catch the ball?
B. What will the speed of the ball be when he catches it?
The location of a particle (in m) is given by its x, y and z coordinates as function of the time, calculate the y-component of the average velocity between t = 3.00 s and t = 12.00 s
How fast can this car round a second curve of radius 320m?
A 7.00-kg object undergoes an acceleration given by a with arrow = (3.00 i hat + 7.00 j hat) m/s2.
Find an average magnitude of the induced emf . A bungee jumper, who's mass is 79 kg, jumps from a tall building. After reaching his lowest point, he continues to oscillate up and down, reaching the low point two more times in 8.2 s.
A 319-kg cannon, sliding freely on a frictionless horizontal plane at a speed of 8.13 m/s, shoots a 13.1-kg cannonball at an angle of 54.7° above the horizontal. What is the velocity of the ball relative to the cannon
Suppose that you wish to fabricate a uniform wire out of 1.00 g of copper. Assume the wire has a resistance R = 0.700 ?, What will be the length of the wire in µm
Consider an old-fashion bicycle with a small wheel of radius 0.25 m and a large wheel of radius 0.86 m. Find the total distance traveled by the rider
An express subway train passes through an underground station. It enters at t = 0 with an initial velocity of 24.0 m/s and decelerates at a rate of 0.150 m/s2 as it goes through. How long is the nose of the train in the station
In an attempt to escape his island, Gilligan builds a raft and sets to sea. The wind shifts a great deal during the day, What is the angle of his final position relative to the island
question1a square plate of side a and mass m is thrown into the air so that it rotates freely under zero torque. the
A cardinal (Richmondena cardinalis) of mass 4.30×10-2 and a baseball of mass 0.14 have the equal kinetic energy. What is the ratio of the cardinal's magnitude of momentum to the magnitude of baseball's momentum.
A straight wire of mass 200 g and length 1.5 m carries a current of 2 A. What is the magnitude of the magnetic field
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