Find the momentum of a 3200-lb car moving at 30 mi/h.
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- A 0.19kg baseball is pitched at 42m/s is struck by the bat with an average force of 700 N, which results in a velocity of 28m/s in the opposite direction from the original velocity. How long were the bat and ball in contact?with what force will 1055 kg car that is accelerating at 2.44 m/s/s hit a tree?A club exerts an average force of +4,000 [N] for 0.5 [s] on a 3 [kg] rock. What is the total change in momentum of the rock?(All answer choices are in the standard SI unit for momentum).
- The conservation of energy equation used in the answer was: Conservation of momentum: m1v1 = m1vf1 + m2vf2I believe the conservation of energy equation is:m1v1 + m2v2 = m1vf1 + m2vf2Therefore the answer should be 1.17 m/s.Am I correct? Can someone check my work pleaseThe mass of a regulation tennis ball is 57 g (although it can vary slightly), and tests have shown that the ball is in contact with the tennis racket for 30 ms.(This number can also vary, depending on the racket and swing.) We shall assume a 30.0 ms contact time. One of the fastest-known served tennis balls was served by “Big Bill” Tilden in 1931, and its speed was measured to be 73 m/s. Suppose that the positive direction of the x-axis is along the direction of motion of the ball after Big Bill's hit. What is the x-component of the force exerted by Big Bill on the tennis ball in his record serve? If Big Bill's opponent returned his serve with a speed of 55 m/s what is the x-component of the force he exerted on the ball, assuming only horizontal motion?I need help with this homework problem.