A cruise ship with a mass of 1.00x107 kg strikes a pier at a speed of 0.750 m/s. It comes to rest after traveling 6.00 m, damaging the ship, the pier, and the tugboat captain's finances. Calculate the average force exerted on the pier using the concept of impulse. (Hint: First calculate the time it took to bring the ship to rest, assuming a constant force.) V₁ = (0.750 m/s)î
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- In tae-kwon-do, a hand is slammed down onto a target at a speed of 15.4 m/s and comes to a stop during the 4.29 ms collision. Assume that during the impact the hand is independent of the arm and has a mass of 0.770 kg. (the magnitude of the impulse is 11.9 kg*m/s) What is the magnitude of the average force on the hand from the target? (PLEASE show how you get this answer )A ball falls from height of 20.0 m, hits the floor, and rebounds vertically upward to height of 15.0 m. Assume that m ball = 0.385 kg. (a) What is the impulse (in kg. m/s) delivered to the ball by the floor? magnitude x direction 979.1 Assume the only impulse delivered to the ball is from the floor, which equals the change in momentum of the ball. Find the initial and final speeds of the ball using conservation of mechanical energy, and calculate Ap noting that all the motion is in the y-direction. kg. m/s up ✓✓ (b) If the ball is in contact with the floor for 0.0300 seconds, what is the average force (in N) the floor exerts on the ball? magnitude 19.223 x Use the impulse-momentum theorem and the result from part (a) to find the force, given that the contact time interval is 0.0300 s. N up direction ✓✓A 40.0-g bullet moving at a 250.0 m/s passes through a 2.40 cm thick sheet of foam plastic and emerges with a speed of 90.0 m/s. Assuming that the speed change takes place uniformly, calculate the average force that impeded the bullet's motion through the plastic. (Hint: You can apply the impulse-momentum theorem to solve the problem.)
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