College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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- Consider a frictionless track as shown in the figure below. A block of mass m1 = 4.85 kg is released from . It makes a head-on elastic collision at with a block of mass m2 = 15.0 kg that is initially at rest. Calculate the maximum height to which m1 rises after the collision. Answer should be in meters.arrow_forwardIn an elastic collision, a 400-kg bumper car collides directly from behind with a second, identical bumper car that is traveling in the same direction. The initial speed of the leading bumper car is 5.60 m/s and that of the trailing car is 6.00 m/s. Assuming that the mass of the drivers is much, much less than that of the bumper cars, what are their final speeds?arrow_forwardYou are the design engineer in charge of the crashworthiness of new automobile models. Cars are tested by smashing them into fixed, massive barriers at 45.0 km/h to the left. A new model of mass 1500 kg takes 0.150 s from the time of impact until it is brought to rest. Calculate the average force (magnitude and direction) that is exerted on the car by the barrier?arrow_forward
- Pls asaparrow_forwardA completely inelastic collision occurs between two balls of wet putty that move directly toward each other along a vertical axis. Just before the collision, one ball, of mass 3.3 kg, is moving upward at 25 m/s and the other ball, of mass 2.0 kg, is moving downward at 13 m/s. How high do the combined two balls of putty rise above the collision point? (Neglect air drag.) Number Unitsarrow_forwardA 1263-kg sports car traveling at 40.0 km/h crashes head-on into a 1743-kg cab moving north at 90.0 km/h. If two cars remain tangled together but free to coast, describe their motion immediately after the collision.a) What is their final speed?b) How much kinetic energy is lost?arrow_forward
- A 22.9-g bullet traveling 289 m/s in a vertical direction buries itself in a 4.4-kg block of wood at rest directly above it. As a result, the bullet/block combination moves vertically upward. Calculate the upward velocity of the bullet/block combination at the point of impact in m/sarrow_forwardTwo blocks of masses m, = 4.00 kg and m, = 8.00 kg are each released from rest at a height of 5.00 m on a frictionless track, as shown in the figure, and undergo an elastic head-on collision. Find the maximum height to which block m, rises after the collision. т т2 5.00 m 5.00 marrow_forwardWhen the effect of aerodynamic drag is included, the y-acceleration of a baseball moving vertically upward is au = -g - kv², while the acceleration when the ball is moving downward is ad = -g + kv², where k is a positive constant and v is the speed in meters per second. If the ball is thrown upward with an initial speed of 25 m/s, determine the time to from ground to apex and the time to from apex to ground. Take k to be 0.005 m-¹ and assume that g is constant. au=-g-kv² Answers: tu = td = 25 m/s ad=-g+kv² S S harrow_forward
- A cube of mass m1 glides through from rest along a frictionless quarter ramp from height 8m and then crashes with stationary cube of mass m2 (m2 = 3m1). After the impact (INELASTIC collision), the second cube slides into an area where the coefficient is 0.56 and stops after travelling a certain distance. What is the distance traveled by the second cube? Note: Round off answer up to 2 decimal places. Use g = 9.8 m/s²arrow_forwardA 3.30-kg steel ball strikes a wall with a speed of 11.0 m/s at an angle of 0 = 60.0° with the surface. It bounces off with the same speed and angle (see figure below). If the ball is in contact with the wall for 0.200 s, what is the average force exerted by the wall on the ball? (Assume right and up are the positive directions.) Fx N Fy yarrow_forwardWhat is the velocity (in m/s) of a 905 kg car initially moving at 25.0 m/s, just after it hits a 125 kg deer initially running at 12.5 m/s in the same direction? Assume the deer remains on the car. (Enter the magnitude.)arrow_forward
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