2. A villain with mass 65.0 kg runs at a velocity of 9.26 m/s directly into Chuck Norris' fist moving at a speed of 0.150 m/s. The villain is knocked back at a velocity of 8.52 m/s and angle 20.0° from the horizontal, while Chuck Norris' fist moves at a velocity of 0.0745 m/s and 10.0° from the horizontal. a. What is the mass of Chuck Norris' fist in kg? b. How much kinetic energy is lost in the collision? Vii ➡ 120° 10°
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- Blythe and Geoff are ice skating together. Blythe has a mass of 50.0 kg , and Geoff has a mass of 75.0 kg . Blythe pushes Geoff in the chest when both are at rest, causing Geoff to move away at a speed of 3.50 m/s . What is Blythe's speed ?B after she pushes Geoff?3. Two skaters are facing each other with their hands touching. The two skaters are at rest. After they push apart the girl has a velocity of 3.5 m/s and mass 45 kg. The boy has a velocity of 2 m/s. What is the boy's mass? Before AfterThe following two questions relate to a baseball being hit. Just before the ball (of mass 0.4kg) contacts the bat, it is travelling in the negative x direction with a speed of 20m/s. Immediately after the hit, the ball moves away from the bat in the positive x direction with a speed of 30 m/s. The bat is in contact with the ball for 10 milli-seconds. 10. What is the magnitude of the average force on the ball in the x direction, while it is in contact with the bat? A) 400 N B) 1200 N C) 1600 N D) 2000 N E) 100,000 N 11. While in contact with the bat, there is an instant when the ball is stationary. At that instant, describe the acceleration of the ball in the x direction: A) In the positive x direction and non-zero B) In the negative x direction and non-zero C) Zero
- 3. Ender and Shen are flying at each other during a battle in V3 space. Ender moves with a velocity v1 of 9.821 m/s while Shen, with a mass of 51.0 kg, moves at a velocity v2 of 7.65 m/s. When the two collide, they hold on to each other and move with a velocity vz of 5.348 m/s. What is Ender's mass in kg? 75° 45° V2 30° V16. You are sitting in a sled, at rest on a pond covered with nice, thick, frictionless ice. Your own mass is 90.2 kg, and the mass of the sled when empty is 20.4 kg. From shore, someone throws a baseball of mass 0.106 kg to you, and you catch it; the horizontal component of the ball s velocity is 32.5 m/s. What will be the sled s (and your) speed with respect to the surface of the pond after you catch the ball? 16.8 cm/s 2.49 cm/s 3.11 cm/s 3.81 cm/sA 56.0-kg astronaut is in space, far from any objects that would exert a significant gravitational force on him. He would like to move toward his spaceship, but his jet pack is not functioning. He throws a 0.720-kg socket wrench with a velocity of 5.00 m/s in a direction away from the ship. After 0.500 s, he throws a 0.800-kg spanner in the same direction with a speed of 8.00 m/s. After another 9.90 s, he throws a mallet with a speed of 6.00 m/s in the same direction. The mallet has a mass of 1.20 kg. How fast is the astronaut moving after he throws the mallet?(assume all speeds are relative to the spaceship).
- 3. Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are moving toward one another, the first having a mass of 1.50 x 105 kg and a velocity of (0.35 m/s)î , and the second having a mass of 1.10 x 105 kg and a velocity of –(0.10 m/s)î . What is their final velocity? V = (0.30 m/s)î V21 = -(0.12 m/s)îKaya, a crew member on an interplanetary space ship, is on a spacewalk. She realizes that her ship is moving away from her at 0.5 m/s. She and her spacesuit have a total mass of 95 kg. Her space suit includes a 15 kg backpack, which is included in the 95 kg total mass.a). What is the minimum velocity she will have to throw the backpack so that she can gain enough velocity to eventually catch up with the ship? b). Kaya applies an average force of 400 N to the backpack for 0.05 seconds. Will Kaya make it back to the ship? If so, determine how much time it will take for her to reach the ship. If not, determine how much more force she would need to apply to make it back.A 309 g glass rolls down an incline and onto a horizontal platform where it hits a beverage can that is laying at rest on its side. The top of the incline is 11.0 cm above the horizontal platform. The beverage can is initially at rest and weighs 7.35 N. Which of following is the final velocity of the glass? Select one: a. 0.612 m / s b. −5.83 m / s c. −1.35 m / s d. −0.612 m / s
- 2. A 62 kg student stands on a 36 kg cart that is free to move in any direction. The cart and student are moving together with a velocity of 2.7 m/s [S]. The student then starts to walk so that her velocity is 3.1m/s [ E25oN] relative to the floor. Calculate the new velocity of the cart.1. A 1.35-kg block of wood sits at the edge of a table, 0.782 m above the floor. A 0.0105-kg bullet moving horizontally with a speed of 715 m/s embeds itself within the block. What horizontal distance does the block cover before hitting the ground? Explain and lable.A system composed of the following particles: a 0.500 kg particle at the origin; a 1.25 kgkg particle at x = 0.150 mm, y = 0.200 mm; and a 0.750 kg particle at x = 0.200 mm, y = -0.800 mm. a. Find the x-coordinate of the center of mass of the system. b. Find the y-coordinate of the center of mass of the system.