A rubber ball (4 kg) falls from a height of 50 m and collides elastically with the floor. What is the velocity of the ball just after it rebounds from the floor?
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- In a ballistic pendulum experiment, a small marble is fired into a cup attached to the end of a pendulum. If the mass of the marble is 0.0235 kg and the mass of the pendulum is 0.250 kg, how high h will the pendulum swing if the marble has an initial speed of 5.65 m/s? Assume that the mass of the pendulum is concentrated at its end so that linear momentum is conserved during this collision. h = mA very hard rubber ball (m = 0.2 kg) is falling vertically at 5 m/s just before it bounces on the floor. The ball rebounds back at essentially the same speed. If the collision with the floor lasts 0.05 s, what is the average force exerted by the floor on the ball?A 4.0 kg ball moving to the right at 5.0 m/s collides head-on with a stationary 2.0 kg. If the collision is elastic, determine the direction and speed of each ball after the collision.
- A 3-kg object moving with a velocity of 7 m/s in the positive x direction strikes and sticks to a 3-kg object moving with a speed of 2 m/s in the same direction. How much kinetic energy is lost in this collision?A 0.034-kg bullet is fired vertically at 206 m/s into a 0.15-kg baseball that is initially at rest. How high does the combined bullet and baseball rise after the collision, assuming the bullet embeds itself in the ball?A 2.8 kg block of wood sits on a frictionless table. A 3.0 g bullet, fired horizontally at a speed of 510 m/s , goes completely through the block, emerging at a speed of 210 m/s . What is the speed of the block immediately after the bullet exits?
- A 0.15 kg baseball is struck by a bat with a contact time of 0.008 seconds. The ball leaves the bat with a speed of 45 m/s (parallel to the ground). What is the force imparted on the baseball by the bat? Assume this is an elastic collision.Situation 7. A ball of mass 0.220 kg that is moving with a speed of collides head-on and elastically with another ball initially at rest. Immediately after the collision, the incoming ball bounces backward with a speed of 3.8m/s. C. Supposed that a ball is dropped from a height of 2.60 m. If the coefficient of restitution between the ball and the ground is 0.60, to what height will it bounce?Ball B Ball A а. 1.75 m/s b. 1.9 m/s 3.5 m/s 3.35 m/s с. 3.06 m/s 2.19 m/s d. 3.00 m/s 2.25 m/s e. 2.95 m/s 2.29 m/s Two billiard balls of equal mass undergo a perfectly elastic head-on collision. If the speed of Bali A is initially 3.50 m/s, and that of Ball B is 1.75 m/s, theft speeds after the collision will be * a
- An 8.0 g bullet is fired horizontally into a 9.0 kg cube of wood, which is at rest and sticks in it. The cube is free to move and has a speed of 40 cm/s after impact. Find the initial velocity of a bullet and type of collision.A young 44-kg ice hockey goalie, originally at rest, deflects a 0.145-kg hockey puck slapped at him at a speed of 37 m/s. In this problem, take the original direction of the puck as positive. Suppose the goalie and the ice puck have an elastic collision and the puck is reflected back in the direction from which it came. What would the final velocity of the puck, in meters per second, be in this case? Suppose the goalie and the ice puck have an elastic collision and the puck is reflected back in the direction from which it came. What would the final velocity, in meters per second, of the goalie be in this case?