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A ball is thrown vertically upward with an initial speed of 10m/s from the top of a building, at a height of 25m from the ground. Assume free fall conditions.
a) to what maximum height above the ground does the ball rise ?
b) With what velocity does the ball strike the ground?
c) How long does the ball take to reach the ground?
Teeing Off A golf club has a lightweight flexible shaft with a heavy block of wood or metal (called the head of the club) at the end. A golfer making a long shot off the tee uses a driver, What is the speed of the club head immediately after the co..
Consider a hoop of mass 2.1 kg and radius 0.57 m that rolls without slipping down an incline. What forces act on the hoop
Find out the distance traveled (in meters) by the jet as the observer watches the nose of the jet cross from one side of the moon to the other.
A rocket, initially at rest on the ground, accelerates straight upward from rest with constant acceleration 29.4m/s2. Find the maximum height ymax reached by the rocket
A 75g bungee cord has an equilibrium length of 1.2 m. The cord is stretched to a length of 1.8m, then vibrated at 20 Hz. What is the spring constant of the bungee cord
A train at rest emits a sound at a frequency of 1045 Hz. An observer in a car travels away from the sound source at a speed of 37 m/s. What is the frequency heard by the observer? Imagine the speed of sound in air to be 340 m/s.
The angular momentum of a flywheel having a rotational inertia of 0.242 kg·m2 about its central axis decreases from 9.30 to 0.230 kg·m2/s in 4.40 s. What is the magnitude of the average torque acting on the flywheel about its central axis during th..
A single force acts on a 2.8 kg particle-like object in such a way that the position of the object as a function of time is given by x = 4.2t - 5.0t2 + 1.1t3, Find the work done on the object by the force
The tub of a washer goes into its spin cycle, starting from rest and gaining angular speed steadily for 7.00 s, Through how many revolutions does the tub turn while it is in motion
A cylinder contains a mixture of helium and argon gas in equilibrium at a temperature of 151? C. Boltzmann's constant is 1.38066 × 10?23 J/K, What is the rms speed of argon
A 0.25 kg block attached to a spring of spring constant 36.5 N/m is oscillating on a horizontal frictionless surface as shown. What is the amplitude of the motion of the block
Jack was exposed to fast neutrons; he received a radiation dose of 300rem on part of his hand, affecting 22.0grams of tissue. The relative biological effectiveness (RBE) of these neutrons is 9.00.
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