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A boy reaches out of a window and tosses a ball straight up with a speed of 13m/s . The ball is 23m above the ground as he releases it.
A. Use energy to find the ball's maximum height above the ground. Express your answer to two significant figures and include the appropriate units.
B. Use energy to find the ball's speed as it passes the window on its way down. Express your answer to two significant figures and include the appropriate units
C. Use energy to find the speed of impact on the ground. Express your answer to two significant figures and include the appropriate units.
A ball is thrown upward from the bridge with the speed of 48 ft/s. it misses the bridge on way down and lands in water 160 ft. Find how long the ball rises, how high it goes, how long it is in the air, and its velocity when it strikes the water.
a certain toaster has a heating element made of nichrome resistance wire. when the toaster is first connected to a 100
Two people push a stalled car at its front doors, each applying a 250n force at 25 degree to the forward direction. How much work does each person do pushing the car 5.4 m?
A hockey puck impacts a goalie's plastic mask horizontally at 118 mph and rebounds horizontally off the mask at 50mph. with what speed will the goalie move
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In the railroad freight yard, an empty freight car of massmrolls along a straight level track at1.0m/s and collides with an initially stationary, What is the speed of the two cars after the collision
A woman weighing 755N stands on a mass less ladder leaning against a frictionless wall. The bottom of the ladder is 4.50m away from the wall, on the floor by static friction coefficient μs= 0.35. The top of the ladder is 9.25m above the floor.
A stunt driver drives a 1500 kilogram truck with a length of 4.25 m around a circular curve with a radius of curvature of 0.333 kilometer. Find what minimum centripetal acceleration the truck must have going around the curve so that it will clear th..
a cannon fires a cannonball at an infinitely tall castle a horizontal distance d away from the cannon. the cannon makes
Charge is uniformly distributed around a ring of radius R= 2.50 cm, and the resulting electric field magnitude E ismeasured along the ring's central axis (perpendicular to the planeof the ring). At what distance (in cm) from the ring's center isE max..
It walks 2.4m along the boat toward shore and the nstops Assuming no friction between the boat and the water, find out how far the dog is then from the shore
A capacitor with capacitance C = 4.10·10^-6 F is connected to an AC power source having a peak value of 6.0 V and f = 130 Hz. Find the reactance of the capacitor
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