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A 0.5 kilogram rubber ball is dropped from a height of 3.0 meter above a hard concrete ground. After striking the ground the ball bounces up to a height of 2.0 meter above the floor. The ball was in contact with the ground for 0.05 second.
A) Find the change in momentum of the ball during the interaction with the ground.
B) Find the magnitude of the average force of the ground on the ball during the interaction.
A pilot claims to have seen a UFO moving initially at the speed of about 440 m/s in an easterly direction and then, in a tie interval of only 1.0s turning 45 degrees and moving souutheast at 440 m/s
Nerve propagation in your body occurs when large electric field in the cell membranes on neurons (?1.0×107 N/C) cause ions to move through the cell walls. What is the acceleration that the ion can get from this electric force
A 40 kg crate is pulled across a rough horizontal surface with a force of 350 N at an angle of 25o above the horizontal. What is the horizontal acceleration, in m/s2, of the crate
An object is placed to the left of a lens, and a real image is formed to the right of the lens. What is the focal length of the lens
In the figure below, two skaters, each of mass 35 kg, approach each other along parallel paths separated by 2.2 m. They have opposite velocities of 1.9 m/s each. What is the angular speed of the skaters
A 10,000 kg empty railroad car moving at 3 m/s collides with a loaded railroad car weighing 196,000 N and couples with it
A boy on a hill shoots an arrow at 20m/s directed at 36.9 degreesabove the horizontal. The arrow hits a target 3.00 seconds afterrelease. Find The horizontal distance from the release point to the target
q1. according to the guinness book of world records 1990 edition p. 169 the highest rotary speed ever attained was 2010
an airplane undergoes the following displacements first it flies 87 km in a direction 40 east of north. next it flies
The horsepower rating commonly used for engines indicates the rate at which they can do work. What amount of work does the engine do on each cycle
A 10 m long conductor is formed into a circle in the xy-plane. Find the magnetic flux through the looped conductor
a student argues the followingwe know that vmax aomega. so if we know the position of a mass on a spring we can
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