9. When you catch a fast-moving baseball, your hand hurts less if you move it in the same direction as the ball because... a) the change in momentum in the ball is less. b) the change in kinetic energy of the ball is less. the impulse on the ball is greater. the time interval of the interaction is greater. c) (p. HAL WAT
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- QUESTION 15 When two billiard balls collide, the collision force as a function of time follows the graph shown below. What is the magnitude of the impulse during the collision? F(N) 500 250 - t(ms) 0.0 2.0 4.0 6.0 O a. 1.2 N-s b. 1.0 N-s OC. 0.80 N-s Od.0.50 N-s e.n20 N oIII. Same lump is thrown towards the same wall (m=3kg, v=3m/s), but this time it bounces off the wall at speed of 2.00 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.Use the impulse-momentum equation to answer questions: 1) Why is it important to “follow through" when trying to hit a home run? 2) Why does it hurt more when you fall on a concrete floor than on a wooden floor? 3) What is the momentum of a golf ball with a mass of 62 g moving at 73 m/s? 4) If in the problem above, the impact between the ball and club lasted for a. 2.0 x 103 s, what force acted on the ball? What force acted on the club? 5) For how long a time must a tow truck pull with a force of 550 N on a stalled 1200 kg car to give it a forward velocity of 2.0 m/s?
- A 1500 kg car accelerates from 15 m/s to 25 m/s. Calculate the impulse experienced by the car.QUESTION 14 The change in momentum of a body due to a sudden force acting on the body is called Oa. A torque Ob. An impulse OC. A free-fall Od. An explosion Oe. A propulsionI. 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 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 3.00 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 2.00 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…
- 19. IP A 0.14-kg baseball moves toward home plate with a ve- locity V₁ = (-36 m/s)x. After striking the bat, the ball moves vertically upward with a velocity v = (18 m/s)ŷ. (a) Find the direction and magnitude of the impulse delivered to the ball by the bat. Assume that the ball and bat are in contact for 1.5 ms. (b) How would your answer to part (a) change if the mass of the ball were doubled? (c) How would your answer to part (a) change if the mass of the bat were doubled instead?I. 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…1. 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 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 wallI. (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 3.00 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 2.00 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…