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A basketball star covers 2.85 m horizontally in a jump to dunk the ball (see figure below left). His motion through space can be modeled precisely as that of a particle at his center of mass. His center of mass is at elevation 1.06 m when he leaves the floor. It reaches a maximum height of 1.90 m above the floor and is at elevation 0.870 m when he touches down again. (Take the upward and forward directions to be positive.)
(a) Determine his time of flight (his "hang time").
(b) Determine his horizontal velocity at the instant of takeoff. (Indicate the direction with the sign of your answer.)
(c) Determine his vertical velocity at the instant of takeoff. (Indicate the direction with the sign of your answer.)
(d) Determine his takeoff angle° above the horizontal.
The lengths of the three telescopes are LA = 434 mm, LB = 653 mm, Find the angular magnification of each telescope
A major league pitcher can throw a baseball in excess of 42.9 m/s. If a ball is thrown horizontally at this speed, how much will it drop by time it reaches the catcher who is 18 m away from the point of release.
Two of Angie's friends are talking to each other at a distance of 3.0 m from where Angie stands. What sound intensity does he measure for the two talkers
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King Arthur's knights use a catapult to launch a rock from their vantage point on top of the castle wall, 12m above the moat. How far from the castle wall does the launched roch hit the ground
A spacecraft is in orbit around a planet. The radius of the orbit is 2.9 times the radius of the planet (which is R = 71451 km), What is the period of the spacecraft's orbit
Radio station KBOB broadcasts at a frequency of 85.7 MHz on your dial using a radio waves that travel at 3.00X10^8 m/s. What's the shortest distance between the towers
A car is moving with constant velocity v, and has wheels of radius R. At what angle does the piece of mud drop off the wheel
find the net rate of radiation by a pot at 35.7°C that has been placed in a -23.9°C freezer. The pot's surface area is 0.111 m2 and its emissivity is 0.655.
A fictional spaceship accelerates at a constant rate of 0.108 m/s^2. How long would it take to reach the moon, 3.48 x 10^8 m away
An amount of ideal gas is con?ned to a sealed box at one-half atmospheric pressure, i.e., 50.65 kPa. With clever control, the volume of the box is reduced to 1/8 of its original value (without any gas leaking in or out), while the temperture is ke..
A cell membrane has a surface area of 1.0 x 10^-7 m^2, a dielectric constant of 5.6 and a thickness of 8.5 nm. How much energy is stored in this capacitor
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