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A 1200 kilogram car is traveling initially with a speed of 25.0 m/s in an easterly direction crashes into the rear end of a 9000 kilogram truck moving in the similar direction at 20.0 m/s. The velocity of the car right after the collision is 18.0 m/s to the east.
(a) Find the velocity of the truck right after the collision?
(b) Calculate how much mechanical energy is lost after the collision?
At a certain distance from the center of the Earth, a 4.5- object has a weight of 4.0 , by what factor does its weight change
a fire hose 3.51 cm in diameter is capable of spraying water at a velocity of 24.7 ms. for a continuous horizontal flow
Three boys each of weight W (300 N) make a log raft with lashing together logs of diameter D (15 cm) and length L (1 m). How many logs will be needed to keep the three boys afloat? Take the relative density of wood to be 0.80.
a woman can read the large print in a newspaper only when it is at a distance of 57 cmor more from her eyes.a is she
Consider a Bragg mirror with nhigh=3.5, nlow=3.1, thigh=60.7nm, tlow=68.5nm , estimate the overlap of light with low index material
while walking between gates at an airport you notice a child running along a moving walkway. estimating that the child
a car is traveling with an initial velocity of 14 ms accelerates at a constant rate of 3 ms2 for 5 seconds. what is its
Usain Bolt is running a 100m dash. He accelerates to top speed over the first 45 m, then runs at a constant speed for the last 55 m, What is his top speed
question1by means of snellrsquos law convince someone that for total internal reflection to happen that index of
The water in a tank is at a gauge pressure of 259,145 Pa. If the bottom of the tank that has an area of 0.5 m2
An object 5 millimeters high is located 15 millmeters in frontof a plane mirror. How far from the mirror is the image located
A 294 N force is pulling an 82.6-kg refrigerator across a horizontal surface. The force acts at an angle of 24.4 ° above the surface. calculate the work done by the kinetic frictional force
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