A ball of mass m is falling towards the ground. Just before it reaches the ground, its speed is v. It rebounds elastically off the ground with a speed v, headed directly upwards. What is the impulse given to the ball by the ground? Take positive to be upwards.
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A: Given,
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A: Impulse may be defined as the product of force exerted by an object for a short interval of time.…
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A: Answer Given Mass m= 1.5 kg Initial velocity vi = -30 m/s Final velocity vf= 12 m/s a ) Using the…
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A:
Q: A 0.1500.150 kg lump of clay is dropped from a height of 1.451.45 m onto the floor. It sticks to the…
A: The expression for the magnitude of the impulse denoted as J imparted by the floor to the clay is ,
Q: 90.1 kg object takes 32.4 s to stop from an initial speed of 8.4 m/s. What is the magnitud
A: Given mass m= 90.1 kg Initial speed u=8.4 m/s Final velocity v=0 Time t =32.4 sec
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A:
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Q: A ball of 1.00 kg initially travels at 20.0 m/s at 30.0° relative to the horizontal in the direction…
A: Please see below for detailed calculations. Explanation:
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Q: A soccer ball with a mass of 0.44 kg has a velocity of 3.4 m/s to the east. It experiences a sudden…
A: Given data The mass of the soccer ball is m = 0.44 kg. The initial velocity of the ball in the east…
Q: A soccer ball with a mass of 0.45 kg has a velocity of 2.0 m/s to the east. It experiences a sudden…
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Q: A 180 g ball is dropped from a height of 2.2 m, bounces on a hard floor, and rebounds to a height of…
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Q: A 210-gg apple is falling from a tree. What is the impulse that Earth exerts on it during the first…
A: Given data Mass of apple M = 210 gm = = 0.210 Kg Time ΔT1= 0.5 sec ΔT2 = 1 sec Acceleration due…
Q: F (N) 100 50 Average Force t (s) 0.15 0.30
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Q: A cart with a mass of 2.0 kg is traveling at 8.6 m/s. It strikes a barrier and recoils with a speed…
A: Impulse is nothing but the change in momentum. So all we have to find is the change in the momentum.
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A: When the football is dropped from rest, the initial velocity will be zero.Apply the third kinematic…
Q: A 0.150 kg lump of clay is dropped from a height of 1.15 m onto the floor. It sticks to the floor…
A: Mass of lump (m) = 0.150 kg height (h) = 1.15 m Initial velocity (u) = 0 m/s
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A: Given : Speed, v = 35.0 m/s Time with airbag, t1 = 0.500 s Time without airbag, t2 =…
Q: e the floor. The ball rebounds straight upward to a height of 0.940 m. Taking the negativ
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Q: A lump of clay (m = 3.00 kg) is thrown towards a wall at speed v = 3.00 m/s. The lump sticks to the…
A:
Q: A tennis ball of mass 0.065 kg and speed of 28 m/s strikes a wall at 40 degrees angle and rebounds…
A: Impulse on the ball =change in momentum of the ball
Q: In the overhead view of the figure, a 480 g ball with a speed v of 8.6 m/s strikes a wall at an…
A: (a) J →= Δp→Δp→ = m(v→f-v→i)Here, v→i = +8.22i^-2.5j^v→f = +8.22i^+2.5j^J →= (0.48kg x 5…
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A: Given data: Mass of the each bullet (m) = 0.01 kg Speed of the each bullet = 450 m/s After…
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A: The given values are, m=0.50 kgv=15.0 m/s∆t=0.02 s
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A: mass m = 2.0 kginitial speed u = +1 m/sFrom the given graph, it is evident that a force of magnitude…
Q: A professional golfer is examining a video of a practice swing. The high‑speed footage shows that…
A: ∆T=0.971 ms =0.971×10-4s1mps=0.447 m/svb=146 mph=146×0.447=65.262 m/smb=45.9…
Q: In the overhead view of the figure, a 410 g ball with a speed v of 3.2 m/s strikes a wall at an…
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Q: A ball of mass 0.180 kg is dropped from rest from a height of 1.25 m. It rebounds from the floor to…
A: Consider a ball having mass m is dropped from height h1 (initially at rest) and then it bounces off…
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- A girl on a bicycle uses 25 N of force to speed up from 2.0 m/s to 4.0 m/s in 2.0 seconds. The positive direction is the direction of motion. What is the impulse the bicyclist applies to speed up?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 ✓✓
- An object of mass 2.5 kg is moving in the negative x direction at a velocity of 2.0m/s. It experiences a force of 12N in 3s. What is the final velocity after the object has experienced the impulse?A force of 90.0 newtons is applied to a cart traveling at 15.0 meters per second. After the force has been applied for 2.00 seconds, it comes to rest. What is the magnitude of the impulse applied to the cart over these 2.00 seconds?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 NA 0.500-kg ball is dropped from rest at a point 1.10 m above the floor. The ball rebounds straight upward to a height of 0.480 m. Taking the negative direction to be downward, what is the impulse of the net force applied to the ball during the collision with the floor?A golf ball of mass 0.045 kg is hit off the tee at a speed of 35 m/s. The golf club was in contact with the ball for 3.50×10−3 s. Part A Find the impulse imparted to the golf ball. Express your answer to two significant figures and include the appropriate units. F¯Δt =________ Part B Find the average force exerted on the ball by the golf club. Express your answer to two significant figures and include the appropriate units. F=____________
- A 0.250 kg lump of clay is dropped from a height of 1.75 m onto the floor. It sticks to the floor and does not bounce. F What is the magnitude of the impulse J imparted to the max 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? 9.5 ms Time (ms) Fmax N II Force (N)Consider an automobile accident in which a 1000 kg car strikes a tree in an inelastic collision. The speed of the car just before the collision was 72 km/hr. The duration of the impulse is 0.01s. What force does the passenger experience? In the same automobile, a passenger of mass 50 kg is sitting, unrestrained, in the front seat. The speed of the passenger was 72 km/hr before the collision and zero afterewards. The duration of the impulse that changes is or her momentum is again 0.01 s. What force does the passenger experience? Same automobile accident, except that the passenger is restrained by a seat belt and an air bag explodes at the moment of impact. The passenger's speed still changes from 72 km/hr to zero, but the air bag slows the time during which this change occurs to 0.01 s. What force does the passenger experience?A tennis ball with a mass of 55 grams experiences a contact time with a tennis racket for 29 milliseconds during an executed serve. The velocity of the tennis ball when it leaves the racket during the serve is 75 m/s. a) What impulse (magnitude only) in Ns did the server exert on the tennis ball in his serve? b) What average force (magnitude only) in Newtons did the server exert on the tennis ball in the serve? c) If the opponent returned the serve with a speed of 53 m/s, what impulse (magnitude only) in Ns did the opponent’s racket exert on the ball during the return shot from the serve? (assume the velocity of the ball when it first hits the racket is the same as the serve velocity mentioned above) d) What average force in Newtons (magnitude only) did the opponent’s racket exert on the ball in the return shot if the ball was in contact with the racket for 28 milliseconds?