3a A 170 g hockey puck has an inelastic collision with a moving zamboni. The puck approaches at 12 m/s, 30 deg to the normal. It bounces back at 8 m/s, 45 deg from the normal. The interaction with the zamboni lasts 20 ms. What is the average force that the zamboni applies to the puck? Make the normal to the zamboni surface the y-axis and assume the puck is initially moving with positive - and y-components.
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- 1.Two cars collide at an intersection and stick together. Car A, with a mass of 1200 kg , was going east at vA = 25 m/s before the collision while car B, of mass 1600 kg , was going north at vB = 16 m/s . What is the speed of the cars after the collision? 2.A head-on, elastic collision between two particles with equal initial speed v leaves the more massive particle (mass m1 ) at rest. The less massive particle has mass m2 . Find the ratio of the particle masses. Then find the final speed of the less massive particle.云 HI 5 F. %24 -10 Part A Jeanette is playing in a 9-ball pool tournament. She will win if she sinks the 9-ball from the final rack, so she needs to line up her shot precisely. Both the cue ball and the 9-ball have mass m, and the cue ball is hit at an initial speed of v. Jeanette carefully hits the cue ball into the 9-ball off center, so that when the balls collide, they move away from each other at the same angle 0 from the direction in which the cue ball was originally traveling (see figure). Furthermore, after the collision, the cue ball moves away at speed vf, while the 9-ball moves at speed vp. (Figure 1) Find the angle 0 that the 9-ball travels away from the horizontal, as shown in the figure. Express your answer in degrees to three significant figures. > View Available Hint(s) For the purposes of this problem, assume that the collision is perfectly elastic, neglect friction, and ignore the spinning of the balls. Submit Provide Feedback Figure 1 of 1 MacBook Air 08 F3 O00 000 F2…A simple pendelum made of a pendelum bob of mass, m1=.0250 kg, and a string of length, l= .720m, is pulled back to an angle of theta = 35 degrees and then released from rest. At the bottom of the swing m1 and m2=.0200 kg collide and stick together. a. What is the speed of m1 immediately before it hits m2? b. What is the speed of m2 immediately after the collision? c. How high above the bottom of the swing do the two masses rise?
- Question 5. Y A tennis ball that has a mass of 5.7 x 102 kg is travelling at a velocity of 35.0 m/s, south, when it collides with a concrete wall. The ball is in contact with the wall for a time of 4.0 × 10³ s. Immediately after the collision, the tennis ball is travelling at a velocity of 32 m/s, north. The magnitude of the average force exerted on the tennis ball by the wall, expressed in scientific notation, is a.b × 10¹ N. The values of a and b, the sign of the exponent, and the value of care and b + or -A 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/sCar 1 is traveling in the +x-direction at 10.0 m/s and Car 2 is stationary. Car 1 collides with, and sticks to, Car 2. Car 1 and Car 2 have masses of 995 kg and 1850 kg, respectively. You may ignore friction and other forces external to the system. a. Using the principle of conservation of momentum, find the velocity (magnitude and direction) of the combined system immediately after this perfectly inelastic collision. b. Find the fractional change in kinetic energy for this collision. In other words, determine
- d. v.> V, > V. v.> V, = V e. %3D 4. A 3.54 kg thin plate is hanging at rest from a massless wire when it is struck by a 10.0 g bullet travelling to the right at 320 m/s. After the collision the bullet instantly comes out the other side of the plate at 42 m/s. How high does the plate swing up in the y-axis.What is the final speed of object two in m/s?4. A 10-kg body is moving through space (ignore gravity) in the positive direction of a y axis with a speed of 140 m/s when, due to an internal explosion, it breaks into two pieces: piece A (mass = 2 kg) and piece B (mass = 8 kg). Piece A moves away from the point of the explosion with a speed of 50 m/s in the +x direction. Piece B has a velocity g after the explosion. a. What is the total linear momentum of the two-piece system after the explosion? Put your answer in unit vector notation. b. What is the x component and y component of the velocity VB of piece B after the explosion? Remember to include a plus or minus sign to indicate direction.