Which of the following questions about collisions is False? Most collisions are inelastic. All of the statements are true Momentum for the system is conserved for all three types of collisions, elastic, inelastic, and completely inelastic. A bullet being fired from a gun and lodge into a wooden block is an example of a completely inelastic collision. Kinetic energy of the total system is conserved for an elastic collision.
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- A 0.055-kg egg falls off a table that is 1.2 m high and lands on a tile floor. Part A What is the impulse delivered to the egg by the floor? Assume that the positive direction is upward. Express your answer with the appropriate units. Part B The egg lands on its side, and at the instant of impact the part of the shell farthest from the floor is 40 mm above the floor. The collision continues until the center of mass is on the floor. Estimate the time interval over which the collision lasts, assuming that the speed of the center of mass of the egg drops to zero linearly in time. Express your answer with the appropriate units. Part C What is the average force exerted by the floor on the egg? Assume that the positive direction is upward. Express your answer with the appropriate units. Part D If the floor were carpeted, the collision time interval might be extended by as much as a factor of four as the carpet "gives" under the egg. What would the average force…What types of collisions conserve total momentum of the system? O Inelastic Collisions O Both elastic and inelastic collisions Elastic Collisions No collisions conserve total momentum What types of collisions conserve total kinetic energy of the system? O Inelastic Collisions O Both elastic and inelastic collisions No collisions conserve total kinetic energy Elastic CollisionsA projectile has undergone an elastic one-dimensional collision with an initially stationary target, along an x axis. The figure below is a graph of position versus time for the projectile and target, before and after the collision. (Two line segments are parallel to the time axis.) Which is true about the masses of the projectile and target? 4 O the projectile's mass is greater O the target's mass is greater O the masses are equal
- In the game of pool, all the balls have the same mass (0.17 kg). Look at the figure carefully. The white cue ball hits the black ball which was initially at rest on the table. The image below shows what happens to each ball. The black ball has a speed of 1.5 m/s after the collision. What is the speed of the white cue ball after the collision? 3.0 m/s a) 1.8 m/s b) 2.6 m/s c) 4.3 m/s d) 5.2 m/s e) 1.5 m/s 30.0° 60.0° 1.5 m/sThe bumper of a car has a force sensor mounted inside which records the force vs time graph during crash testing. A particular collision occurs between t = 0.075s and t = 2.32s and can be modelled by the following function: F(t) = 4t4 – 80t² + 140t – 10 A graph of the collision is also provided below: Impulse 60 50 40 30 20 10 1 time (s) Part A The impulse during the collision will be while the maximum force experience by the bumper will be 75 kg · m/s, 33N 54 kg · m/s, 54N O 75 kg · m/s, 54N 54 kg · m/s, 33N (N) aɔ10Determine the unknown velocity value. Assume that the collisions occur in an isolated system.
- After the ball A hits (or collides with) the ball B, they are both observed to move off at 45° to the x axis,ball A above the x axis and ball B below. So ?′A= 45° and ?′B = −45°.Is the collision elastic? Justify your answerA 1 500 kg car travelling at 25 m/s collides with a 2 500 kg van stopped at a traffic light. As a result of the collision, the two vehicles become entangled. With what initial speed will the entangled mass move off, and is the collision elastic or in elastic? (K:1) SPEED TYPE OF COLLISION A. 9.4 m/s Flastic B. 9.4 m/s Inclastic C. 15 m/s Elastic D. 15 m/s Inclastic Select one: O C D QA B OA truck with a mass of 1600 kg and moving with a speed of 13.5 m/s rear-ends a 585 kg car stopped at an intersection. The collision is approximately elastic since the car is in neutral, the brakes are off, the metal bumpers line up well and do not get damaged. Find the speed of both vehicles after the collision in meters per second. V car 6.27 m/s V truck = 19.77 X m/s
- A 10 kg ball of putty moving to the right has a head-on inelastic collision with a 1 kg putty ball moving to the left. If the combined blob doesn't move just after the collision, what can you conclude about the relative speeds of the balls before they collided?Speed of 10 kg ball = _ ✕ speed of 1 kg ball.MULTIPLE CHOICE QUESTIONI. A lump of clay (m = 3.01 kg) is thrown towards a wall at speed v = 3.15 m/s. The lump sticks to the wall. (a) What kind of collision is it? Is momentum conserved during this collision? Why or why not? (b) Calculate the impulse imparted on the lump by the wall. (c) Calculate percent of initial kinetic energy lost during this collision. II. Same lump is thrown towards the same wall, but this time it bounces off the wall at speed of 3.15 m/s. (a) What kind of collision is it? Is momentum conserved during this collision? Why or why not? (b) Calculate the impulse imparted on the lump by the wall. (c) Calculate percent of initial kinetic energy lost during this collision. III. Same lump is thrown towards the same wall, but this time it bounces off the wall at speed of 2.24 m/s. (a) What kind of collision is it? Is momentum conserved during this collision? Why or why not? (b) Calculate the impulse imparted on the lump by the wall. (c) Calculate percent of initial kinetic…