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A ball is thrown upward with an initial velocity of 14 m/s. Using the approximate value of g = 10 m/s2, what are the magnitude and direction of the ball's velocity at the following times?
(a) 0.95 s after it is thrown
(b) 2.10 s after it is thrown
An object attached to a spring has simple harmonic motion with amplitude of 3.00 cm. When the object is 1.73 cm from the equilibrium position, what fraction of its total energy is potential energy?
What is the potential energy of this group of charges. The coefficient of kinetic friction between the crate and the floor is 0.25. Find the acceleration of crate.
A 13 kg block is at rest on a level floor. A 400g globof putty is thrown at the block so that the putty travelshorizontally, hits the block, and sticks to it. what is the initial speed of the putty
An object 2.0 cm tall is placed 24 cm in front of a convex mirror whose length is 30 cm.
an 8.70 kg block slides with an initial speed of 1.66 m/s up aramp inclined at an angle of 27.4 degree with the horizontal. find the distane the block slides before coming to rest
Maddox takes off on his jet ski so they have a combined mass of 319.86kg. The skis have a thrust of 982.13N, What is Maddox's top speed
two equally charged particles held 3.2 x 10-3 m apart are released from rest. the initial acceleration of the first
A 0.200H inductor is connected in series with a 85.0? resistor and an ac source. Derive an expression for the voltage vR across the resistor
what is the new value of energy stored in it. What is the force that is acting between them.
You want to use a steel cable to tow your car (m = 1980 kilogram). The cable is solid steel with a diameter of 0.9 centimeter and a length of 10 meter. evaluate how much will the cable stretch
Two blocks (A and B) are in contact on a horizontal frictionless surface. A 40N constant horizontal force is applied to A. The mass of A is 5.0kg and the mass of B is 20kg
In a common but dangerous prank, a chair is pulled away as a personis moving downward to sit on it, causing the victim to land hard onthe floor. Suppose the victim falls by 0.50 m, the mass that moves downward is 70 kg, and the collision on the fl..
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