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Q. A ball is dropped from the top of a 50 meter high cliff. At the same time, a carefully aimed stone is thrown straight up from the bottom of a cliff w/ a speed of 24 meter/sec. The stone and ball collide part way up. How far above the base of the cliff does this happen?
Q. A block is resting on a ramp as shown in the figure below. You can change the inclination angle by raising one end of the ramp. The block has a mass m = 7.5 kg. At the interface between the ramp and the block, the coefficient of static friction is s = 0.45, and the coefficient of kinetic friction is k = 0.315. What is the acceleration at the point where the block begins to slip.
A 1.00x10^2 kg crate is being pushed across a horizontal floor by a force P that makes an angle of 30.0° below the horizontal. The coefficient of kinetic friction is 0.200. What must be the magnitude of P, so that the net work done by it and the k..
A train starts at rest at a station and accelerates at a rate of 2.0 m/s^2 for 20 seconds. Then, this train runs at a constant speed for 100 seconds and slows down at a rate of 5.0 m/s^s until it stops at the next station. compute the total distan..
A rectanbular tank is placed on wheels and is given a constant horizontal acceleration a. display that, at steady state, the angle made by the free surface with the horizontal is given by tan(delta)=a/g.
At one instant a bicyclist is 40m due east of a park's flagpole, going due south with a speed of 10m/s. Then 30.0s later, the cyclist is 40m due north of the flagpole.
Where does package hit the ground relative to the point
How much time passes by they collide
A sledge loaded with bricks has a total mass of 17.8 kg and is pulled at constant speed by the rope inclined at 20.4° above the horizontal. The sledge moves a distance of 20.7 m on a horizontal surface. The coefficient of kinetic friction between ..
A robot probe drops a camera off the rim of the 389 m high cliff on Mars, where the free fall acceleration is 3.7 m/s^2. Find out velocity with which it hits the ground and the time required for it to reach the ground.
A ship sets out to sail to the point 158 km due north. An unexpected storm blows the ship to a point 134 km due east of its starting point. (a) How far (in km) and (b) in what direction (as an angle from due east, where north of east is a positive an..
Two charged bodies exert the force of .145N on each other. If they are moved so that they are one fourth as far apart, what force is exerted.
W hat least energy an incident alpha particle must have to penetrate the gold nucleus. What is the direction of the carbon atom after the collision.
In a nuclear experiment a proton with kinetic energy 1.5 MeV moves in a circular path in a uniform magnetic field. What energy (in MeV) must (a) an alpha particle (q = +2e, m = 4.0 u) and (b) a deuteron (q = +e, m = 2.0 u) have if they are to circ..
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