Q4. A man throws a 0.2 kg ball horizontally towards a wall. The ball leaves the man's hands with a distance of 2 m away from the wall and a speed of 3 m/s in horizontal direction, determin the velocity of the ball when it rebounds from the wall if the coefficient of restitution is 0.5. [Type C] Kl HORARRA
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- A 60 g tennis ball lands on the racket of a player with the speed of 108 km/h, and the player returns the ball with a speed of 90 km/h. the ball has been in contact during 0.2 s with the racket of the player. Determine: The change in momentum during the return of the ball The average force deployed by the player to return the ball21- A baseball with a mass of 147 g is thrown horizontally with a speed of 41.1 m/s (92 mi/h) at a bat. The ball is in contact with the bat for 1.00 ms and then travels straight back at a speed of 45.6 m/s (102 mi/h). Determine the average force (in N) exerted on the ball by the bat. Neglect the weight of the ball (it is much smaller than the force of the bat) and choose the direction of the incoming ball to be positive. (Indicate the direction with the sign of your answer.)12. A 2575 kg van runs into the back of an 925 kg compact car at rest. Immediately afterward the two vehicles move off together at 3.5 m/s. (a) Find the initial speed of the van. (b) Supposing the duration of the impact is between 0.10 and 0.50 seconds, calculate a range of values for the force of impact acting on the car.
- 3) A golf club exerts an average horizontal force of 1000 N on a 0.045-kg golf ball that is initially at rest on the tee. The club is in contact with the ball for 1.8 milli seconds. What is the speed of the golf ball just as it leaves the tee?13. A space shuttle, while travelling at a speed of 4000 km/h with respect to the earth, disconnects and ejects a module backward, weighing one fifth of the residual part. If the shuttle ejects the disconnected module at a speed of 100 km/h with respect to the state of the shuttle before the ejection, find the final velocity of the shuttle. Solution: Suppose the mass of the shuttle including the module is M. The mass of the module will be M/6. The total linear momentum before disconnection = M (4000 km/h).A tennis ball, with a velocity of 6.2 m/s, impinges at an angle of ? = 30˚ (with respect to the vertical line) on a fixed and smooth horizontal table. Given the coefficient of restitution is 0.5, determine the velocity and the direction of the ball after collision with the table
- 34... An object of mass 3M, moving in the + direction at speed vo, breaks into two pieces of mass M and 2M as shown in Figure 8-28. If 0₁ = 45° and 0₂ = 30°, determine the final velocities of the resulting pieces in terms of vo. Example 8-4 3M Vo 2M M Figure 8-28 Problem 34 V₂ = ? 0₂ V₁ = ? Freedman, College Physics, 3e. 2021 W. H. Freeman and AueduoKyle, a 80.0 kg football player, leaps straight up into the air (with no horizontal velocity) to catch a pass. He catches the 0.430 kg ball precisely at the peak of his jump, when he is 0.437 m off the ground. He hits the ground 0.0358 m away from where he leapt. If the ball was moving horizontally when it was caught, how fast u was the ball traveling? Vs m/s2) With a collision velocity V = 650 m/s, a 60-gram projectile collides and becomes embedded into a 30kg sand-filled box, which is initially at rest. Calculate the maximum deflection angle 0 and the total mechanical energy before and after the collision. 2m