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a falling rubber ball bounces off the floor. the velocity just before it hits the floor is Vi= (2.7m/2) x + (5.2m/s)y. where x and y indicate the x and y components of the initial velocity voctor. just after it hits the floor, the balls velocity is Vf= (2.7m/2) x + (-5.2 m/s) y. the balls mass is 0.038 kg. the ball is in contact with the ceiling for only 1.8 x 10^-3 seconds.
a. what is the change in momentum of the ball from just before to just after it is in contact with the floor ?
What is coefficient of kinetic friction
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What are the original charges on each sphere
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You are to build a box whose height is 0.280 times its length. In order for the box to have a given volume while using a minimum amount of cardboard, what should be the ratio of the width of the box to its length.
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A 0.200-kg block along a horizontal track has a speed of 1.40 m/s, What is the spring's maximum compression if the track is frictionless
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A car travelling east at 41.2 m/s passes a trooper hiding at the roadside. The driver uniformly reduces his speed to 25 m/s in 3.90 s.
The position of a cart that is oscillating on a spring is given by the equation x= 12.3 cm cos [(1.26 s-1)t] . When t= .805s , what are the (a) velocity and (b) acceleration of the cart ?
A horizontal desk surface measures 2.08 m x 1.73 m. If Earth's magnetic field has magnitude 0.495 mT and is directed 64.8° below horizontal, what is the magnetic flux through the desk surface.
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