A 2.4-kg ball falling vertically hits the floor with a speed of 2.5 m/s and rebounds with a speed of 1.5 m/s. What is the magnitude of the impulse exerted on the ball by the floor?
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- A ball of mass is 0.261 kg is dropped vertically from a height of 0.67 m and bounces back to the original height. What is the magnitude of the impulse that the floor exerts on the ball during the bounce?A golf ball m = 0.11 kg strikes a vertical concrete wall elastically with a horizontal velocity of v = 13 m/s. Write an expression for the magnitude of the impulse I experienced by the ball. If the ball was in contact with the wall for t = .1s, what is the magnitude of the force F the ball experienced in N? If the ball rebounds with only half the velocity it comes in with, what is the magnitude of the impulse in kg m/s? Determine the magnitude of the change in kinetic energy in the above situation. Give your answer in joules.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 ✓✓
- Two rams are fighting and run straight at each other. Ram 1 has m1 = 115 kg and an initial velocity v1 = 9 m/s. Ram 2 has m2 = 127 kg and an initial velocity v2 = -7 m/s. When they collide, they lock horns. What impulse did Ram 2 deliver to Ram 1?A 1.0 kg ball drops vertically onto a floor, hitting with a speed (just before hitting floor) of 20 m/s. It rebounds with a speed (just after leaving floor) of 15 m/s. (a) What is the magnitude of the impulse that acts on the ball during the contact?(b) If the ball is in contact with the floor for 0.040 s, what is the magnitude of the average force exerted on the floor?A stone is dropped from a height of h1 = 3.55 m above the ground. After it bounces, it only makes it to a height h2 = 2.37 m above the ground. The stone has mass m = 0.148 kg. a) What is the magnitude of the impulse I, in kilogram meters per second, the stone experienced during the bounce? b) If the stone was in contact with the ground for t = 0.153 s, what was the magnitude of the constant force F acting on it, in newtons? c) How much energy, in joules, did the stone transfer to the environment during the bounce?
- A professional golfer is examining a video of a practice swing. The high-speed footage shows that his club is in contact with the ball (which was initially at rest on the tee) for only Ar=0.571 ms, and the radar gun clocks the speed of the ball as = 176 mph after it comes off the club. The golf ball has a mass of my = 45.9 g. What is the magnitude of the impulse imparted to the ball by the club? magnitude of the impulse: What is the magnitude of the average force of contact between the club and the ball? magnitude of the average force of contact: kg m NIn the overhead view of the figure, a 460 g ball with a speed v of 4.5 m/s strikes a wall at an angle 0 of 20° and then rebounds with the same speed and angle. It is in contact with the wall for 14 ms. In unit-vector notation, what are (a) the impulse on the ball from the wall and (b) the average force on the wall from the ball? (a) Number i (b) Number i+ т i+ i i ·X 0 j Units j Units >A 0.20-kg stone you throw rises 42.4 m in the air. The magnitude of the impulse the stone received from your hand while being thrown is Question 8 options: 14 Ns. 29 Ns. 5.8 Ns. 3.4 Ns. 6.5 Ns.
- A rubber ball of mass 30.0 g is dropped from a height of 2.00 m onto a floor. The velocity of the ball is reversed by the collision with the floor, and the ball rebounds to a height of 1.50 m. What impulse was applied to the ball during the collision?A 0.250 kg lump of clay is dropped from a height of 1.45 m onto the floor. It sticks to the floor and does not bounce. What is the magnitude of the impulse J imparted to the clay by the floor during the impact? Assume that the acceleration due to gravity is g = 9.81 m/s². J = kg. m/s The force exerted by the floor on the clay is plotted as a function of time in the figure. What must have been the maximum force Fmax exerted by the floor on the clay? Fmax = N Force (N) max 5.5 ms Time (ms)A 1.2 kg ball drops vertically onto a floor, hitting with a speed of 25 m/s. It rebounds with an initial speed of 10 m/s. a) What impulse acts on the ball during the contact? b) If the ball is in contact with the floor for 0.020 s, what is the magnitude of the average force on the floor from the ball? c) why is 25m/s "negative" ? why is it considered the initial velocity yet it will be considered negative?