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A green ball is thrown vertically downward to the ground with an initial speed of 5m/s, at time t = 0, from a vertical height of 100m above the ground. 2 second later, a red ball is thrown vertically upward from the ground with an initial speed of 15m/s
a) find the height above the ground where these balls pass each other, if possible, and hence
b) Determine the magnitude and direction of velocity of the red ball when the balls pass each other.
A 5.6 kg block hangs from a spring with spring constant 1840 N/m. The block is pulled down 4.1cm from the equilibrium position, What is the total mechanical energy of the motion
A 8500 kg boxcar traveling at 16.8 m/s strikes a second boxcar at rest. What is the mass of the second car
The near point of a naked eye is 32 cm. When an object is placed at the near point and viewed by the naked eye, Determine the angular size of the image
A 12-kg block initially slides at 18 m/s on a flat rough surface and eventually stops. what is the entropy change of the system
A person throws a 1/2 kg brick out the window. What would be the resultant velocity of the wagon
Two astronauts are at rest in outer space, one 19.7 m from the Space Shuttle and the other 39.4 m from the Shuttle. Using a 129.0-W laser, how long will it take her to reach the Space Shuttle
A major league pitcher can throw a baseball in excess of 41 m/s. If a ball is thrown horizontally at this speed, how much will it drop by time it reaches a catcher who is 17m away from the point of release.
The concepts in this problem are similar to those in Multiple-Concept Example 4, What is the tension in the cable? How much work is done by the tension in the cable
A 3.500 kg puppet oscillates at the end of a light spring of constant k = 8.00 N/m. What is the frequency of the oscillations
A very light rigid rod of length 0.600 m extends straight out from one end of a metre long rod of mass M. Determine the period of oscillation of the system
A rocket carrying a satellite is accelerating straight up from the earth's surface. At 1.10 s after liftoff, the rocket clears the top of its launch platform, Calculate the magnitude of the average velocity of the rocket
A force P pulls on a crate of mass m that is in contact with a horizontal rough surface. Which statement best describes the motion of the crate
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