13 (Class demonstration) Five identical balls with same mass are set up as shown in the figure. Initially four balls are not moving. When the ball on the left moves toward other four ball, they have one- Himensional elastic collision (all balls are in the same straight line). After the elastic collision, what's the umber of balls that are moving toward right? a) One ball b) Two balls c) Three balls d) Four balls e) Five balls
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- Q3A green toy car with 0.025-kg mass moves to the right at 0.30 m/s and has a head-on, elastic collision with a black 0.045-kg toy car which is at rest on a smooth, level surface. Which of the following are the correct magnitudes and directions of the velocities of the two toy cars after the collision? 0.025 kg toy car 0.045 kg toy car A) 0.09 m/s, left 0.21 m/s, right B) 0.10 m/s, right 0.30 m/s, right C) zero m/s 0.25 m/s, right D) 0.20 m/s, left 0.20 m/s, right E) 0.20 m/s, left zero m/sQUESTION 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 o
- A bullet of a mass 5.00g is fired horizontally into a stationary wood block of a mass 0.450kg. After impact the block with the embedded bullet is moved horizontally at 6.2 m/s A) what is the initial speed of the bullet B) what is the average force during the collision if it lasted for 0.23* 10^(-3) sAs shown in the figure below, two blocks (m1 and m2) are each released from rest at a height of h = 3.53 m on a frictionless track and when they meet on the horizontal section of the track they undergo an elastic collision. If m1 = 2.50 kg and m2 = 4.15 kg,determine the maximum heights (in m) to which they rise after the collision. Use the coordinate system shown in the figure.Question 1: Impulse and momentum method to solve problems related to impact for particles Figure Ql shows the magnitude and direction of the velocities of two frictionless paintballs before they hit each other. The masses of paintball P and paintball Q are each 180g and the coefficient of restitution, e is 0.6. Determine the magnitude and direction of the velocity of paintball P and paintball Q after the collision. 30mls 158. 20° 15 mls Figure Q1
- 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 5000.0-kg truck moving rightward with a speed of 5.00 km/hr collides head-on with a 1000.0-kg car moving leftward with a speed of 20.0 km/hr. The two vehicles stick together and move with the same velocity after the collision. Determine the post- collision velocity of the car and truck. Final velocity = km/hr %3DA bomb is initially at rest when it suddenly explodes into three pieces. A 6 kg piece goes north at 26 m/s, and a 5 kg piece goes east at 13 m/s. The speed of the third piece is 18 m/s. What is the mass of the third piece? A) 9.4 kg B) 12 kg OC) 14 kg D) 16 kg E) 19 kg
- 3. Block A approaches block B at a velocity vo. Block B is at rest. After collision, the two blocks stick together after collision and travel at a velocity of v/3. Which block has a greater mass? A B (A) Block A (B) Block B (C) Neither; their masses are the same. (D) The answer cannot be determined without knowing the mass of one of the blocks.A 0.425-kg hockey puck, moving east with a speed of 3.25 m/s , has a head-on collision with a 0.950- kg puck initially at rest. Assuming a perfectly elastic collision, what will be the speed (magnitude of the velocity) of each object after the collision? Enter your answers numerically separated by a comma. ΑΣΦ vighter puck' heavier puckYou are playing lawn bowls. You roll one ball toward another of different mass that is initially at rest. They collide elastically and go off in different directions. (a) Choose values for the following. None of them can be 0. i. The masses of the balls (they are different) Ma= 2kg, Mb= 4kg ii. The initial velocity of the ball you launch 6mls iii. The angle at which the striking ball deflects after the collision 180 (b) Draw a photo before the collision, and another after. (c) Calculate the velocities of the two balls in x and y after the collision.