Question 1 During a rugby game two players are running toward each other. One has a mass of 80.4 kg and the other has a mass of 63.0 kg. The player who has the bigger mass is running at 1.50 m/s and the other is running at 4.20 m/s. They hit each other, fall to the ground and slide while attached to each other. If the coefficient of kinetic friction between the players and the ground is 0.400, how far did they slide?
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- Two people on skates, one with a mass of 60 kg and the other with a mass of 40 kg, stand on ice (frictionless surface) holding a 10 m pole (negligible mass). The skaters pull themselves from the end of the pole until they meet. How far does the 40 kg skater move.An interacting system of two objects has no external force acting on the system. The firstobject has a mass 2.00 kg and is moving with a velocity (2.00 m/s)i + (1.00 m/s)j at time t =0.00 s. The second object has a mass 3.00 kg and is moving with a velocity (-1.00 m/s)i +(1.00 m/s)j at time t = 0.00 s. The second object is moving with a velocity (2.00 m/s)i +(-1.00 m/s)j at time t = 1.00 s. What is the total momentum of the system at time t = 0.00 s?Question 1 During a rugby game two players are running toward each other. One has a mass of 78.8 kg and the other has a mass of 58.1 kg. The player who has the bigger mass is running at 1.60 m/s and the other is running at 4.60 m/s. They hit each other, fall to the ground and slide while attached to each other. If the coefficient of kinetic friction between the players and the ground is 0.300, how far did they slide?
- A small car has a head-on collision with a large truck. Which of the following statements concerning the magnitude of the average force due to the collision is correct? O The small car experiences the greater average force magnitude. The small car and the truck experience the same average force magnitude. O The truck experiences the greater average force magnitude. It is impossible to tell since the masses are not given. It is impossible to tell since the velocities are not given. L _John's mass is 94.7 kg, and Barbara's is 54.8 kg. He is standing on the x axis at xj = +9.14 m, while she is standing on the x axis at x³ = +2.05 m. They switch positions. How far and in which direction does their center of mass move as a result of the switch? Distance moved by center of mass = iA 6-g bullet is shot into a 2.1-kg block of wood, where it becomes embedded. The block is initially at rest and the bullet has an initial velocity of 400 m/s. The block then travels 1.2 m horizontally. What is the coefficient of kinetic friction between the block and the surface?
- Jordan is riding a bike on a boat. (Why? No idea.) The boat is on a lake with stationary water. Jordan has a mass of 79 kg. The boat has a mass of 123 kg. Jordan's bicycle has a mass of 10.5 kg. Jordan pedals from one end of the boat to the other, which is a distance of 11.7 meters relative to the boat. Assuming the boat is free to move with negligible friction on the surface of the water, how far (in meters) does the boat move relative to the water (or relative to a stationary object on the shore)? (This is asking for a distance, not a change in position, so the answer is a positive number.)A body is traveling at 2.0 m/s along the positive direction of an x axis; no net force acts on the body. An internal explosion sepa-rates the body into two parts, each of 4.0 kg, and increases the total kinetic energy by 16 J. The forward part continues to move in the original direction of motion. What are the speeds of (a) the rear part and (b) the forward part?An athlete with a mass of 65.0 kg is running at a horizontal velocity of 10.5 m/s before jumping at the takeoff line. When he arrives at the takeoff line, he stays in contact with the ground for 0.185 seconds before taking off at a 50.0 degree angle with a velocity of 12.5 m/s. Determine the vertical component of the average impulsive force exerted on the athlete by the ground. 10.5 m/s Take- off line 12.5 m/s 50°
- A 70 kg space voyager is stranded on a 700 kg escape pod that has left the main spacecraft and is floating in free space (you may assume its velocity is 0 m/s). A rescue ship is approaching and will pass within 100 m of the escape pod. The space voyager plans to push herself away from the escape pod towards the point by which the rescue ship will pass (point P in the diagram). The space voyager knows that she can apply a constant force of 100 N while she pushes for the 0.50 s it takes her to straighten her arms. (a) What will her velocity be after she has finished pushing against the rescue pod? (b) How long before the rescue ship is due to arrive a point P should the space voyager begin her push?Please answer question 7A man with mass m1 = 51 kg stands at the left end of a uniform boat with mass m2 = 168 kg and a length L = 3.3 m. Let the origin of our coordinate system be the man’s original location as shown in the drawing. Assume there is no friction or drag between the boat and water. 1) If the man now walks to the right edge of the boat, what is the location of the center of mass of the system? 2) After walking to the right edge of the boat, how far has the man moved from his original location? (What is his new location?) 3) After the man walks to the right edge of the boat, what is the new location the center of the boat? 4) Now the man walks to the very center of the boat. At what location does the man end up?