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You throw a ball upward with an initial speed of 4.6 {\rm m/s}. When it returns to your hand 0.94 {\rm s} later, it has the same speed in the downward direction (assuming air resistance can be ignored). What was the average acceleration vector of the ball?
A pitcher is employing a ballistic pendulum to determine the speed of his fastball. A 3.3 kg lump of clay is suspended from a cord 2.0 m long, find the speed of the pitch
you throw a rock with an initial horizontal velocity and it hits the ground at x meters away from your feet. what if a
find the final temperature when 1000 g of water at 20 celcius in a 125 g copper calorimeter is mixed with 50g of steam originally at 153 celcius.
A 1200 car is moving on the freeway at 60.0 . What is the magnitude of its momentum in SI units? What is the magnitude of its kinetic energy in SI units. how much kinetic energy does it have
A vehicle is speeding at 115 km/h on a straight highway when a police car moving at 145 km/h enters the highway from an onramp and starts chasing it.
Water is pumped steadily out of a flooded basement at a speedof 5.0 m/s through a uniform hose of radius 1.0 cm. What is the power of the pump
a block is pushed across a rough horizontal surface by a horizontal force of magnitude P= 25 . The coefficient of kinetic friction between the block and the ground is 0.3 if the blck started from rest
An automobile has a total mass of 1600kg. It accelerates from rest to 30km/h in 40 s. evaluate the total kinetic energy of the automobile
Water has a density of 1000 kg/m^3. One atmosphere is 1.013 X 10^5 N/m^2. Find the pressure in the upper pipe
A fighter pilot dives his plane toward the ground at 230 m/s.He pulls out of the dive on a vertical circle. What is the minimun radius of the circle
A fighter jet is launched from the aircraft carrier with the aid of its own engines and a steam powered catapult. The thrust of its engines is 2.3E5N. What is the work done on the jet by the catapult
A proton moving at 3.90 X 10^6 m/s through a magnetic field of magnitude 1.76 T experiences a magnetic force of magnitude 8.40 X 10^-13 N. What is the angle between the proton's velocity and the field
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