1. A child whose mass is 60 kg is skating on a frozen child pond with a velocity of 3 m/s. The child lands on a frictionless 15 kg sled, which is at rest on the ice, and holds on. ice sled (Assume that the ice is frictionless). a. Consider the system of the sled and the child. Note there is no net outside force acting on system. Which statement is true? the momentum of the child is the same before and after the child lands on the sled. • the momentum of the sled is the same before and after the child lands on the sled. • the total momentum of the system of the sled and child are the same before and after the child lands on the sled. b. Use your conclusion from (a) to determine the speed of the sled with the child on it.

1. A child whose mass is 60 kg is skating on a frozen child pond with a velocity of 3 m/s. The child lands on a frictionless 15 kg sled, which is at rest on the ice, and holds on. ice sled (Assume that the ice is frictionless). a. Consider the system of the sled and the child. Note there is no net outside force acting on system. Which statement is true? the momentum of the child is the same before and after the child lands on the sled. • the momentum of the sled is the same before and after the child lands on the sled. • the total momentum of the system of the sled and child are the same before and after the child lands on the sled. b. Use your conclusion from (a) to determine the speed of the sled with the child on it.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

Q 1 please
3. A 65.00-kg athlete applies a force of 400.0 N to a 25.00-kg cart, which is initially at rest, over a period of 2.00 s before jumping onto the cart. Assuming there is no friction between the cart and the road on which it runs, what is its velocity after the athlete jumps on?
5. A truck and a small car are both going 10 mph when they collide head on. a. Does the truck or the car experiences the largest force during the collision? Why? b. Which experiences the largest impulse during the collision? Why? c. Which experiences the largest change in momentum during the collision? Why? d. Which will experience the largest change in velocity? Why?
The train car on the left with mass m1 is moving with speed V1i=24.0 m/s when it collides with a stationary car with mass m2. The two stick together and move with velocity V.a. Write initial momentum of the system by using symbols only?b. Write final momentum of the system by using symbols only? c. Use momentum conservation and solve for unknown v by using symbols? d. Calculate V if m1=m2?e. Show that the collision is inelastic?
On a frictionless air track, a 0.175 kgkg glider moving at 1.20 m/sm/s to the right collides with and sticks to a stationary 0.275 kgkg glider. 1.What is the net momentum of this two-glider system before the collision? Use coordinates where +xx is in the direction of the initial motion of the lighter glider. 2.What must be the net momentum of this system after the collision? 3.Use your answers in Parts A and B to find the speed of the gliders after the collision. Is kinetic energy conserved during the collision?
A green car with mass 1200 kg is travelling east at 40 m/s. Simultaneously, a yellow car with mass 1500 kg is travelling north at 30 m/s. They collide in a perfectly inelastic collision, such that there is no rotation. a. During the collision, which car experiences the greater force? b. What is the momentum of each car before the collision? c. What is the magnitude of the momentum of the two combined cars after the collision? d. What is the speed (magnitude) of the two cars after the collision? e. What is the direction of the motion of the cars after the collison?
A 2000 kg car is being pushed from rest by a bulldozer. The car is pushed for 10 seconds along a rough road with a coefficient of friction of 0.05. The car experiences impulse of 10,000 kgm/s. a. What net force acts on the car? b. What is the acceleration of the car? c. What is the work done by the non-conservative forces as the car moves along the road? acar
Three balls A, B, and C with masses 0.0500 kg, 0.0700 kg, and 0.0900 kg, respectively, are moving along the xy-plane and approaching the origin as shown in the figure below. Ignore friction. The initial velocities of balls A and B are shown in the figure. Suppose all three balls arrive the origin at the same time and stick together after the collision. a. What must be the x- and y-components of the initial velocity of ball C in order for the three balls to move along the +x-axis at 1.00 m/s after the collision?
A 2 kg car is traveling at 10 m/s. It collides and sitcks with a 5 kg car traveling the opposite direcyion at 7 m/s. a. Draw an IF Chart for the scenario b. Calculate the total initial momentum c. Calculate the final velocity of the two cars
At an amusement park, Keenan is in a 96.0 kg bumper car moving to the right at a speed of 3.50 m/s. He collides with his friends who are in a 135 kg bumper that is at rest. Keenan bounces backward at a speed of 1.25 m/s. a. What is the new velocity (magnitude and direction) of his friends? b. Calculate if kinetic energy is conserved during this collision.
You drop a steel ball and a clay ball, both of the same mass, from the same distance. The steel ball strikes the ground and rebounds with almost the same speed. The clay ball strikes the ground and sticks. Assume the collisions occur over roughly the same amount of time. Which ball exerted a greater force on the ground? Select the correct answer with the best explanation. A. The two exert the same force. Since they collide with the same initial momentum, they will exert thesame force.B. The clay ball exerts the greater force. Since it starts with some momentum and ends with no momen- tum, it undergoes a greater change in momentum than the steel ball, which rebounds with the same momentum (no change).C. The clay ball exerts the greater force. All of its energy is transferred to the floor, whereas the steelball rebounds with the same kinetic energy, doing no work on the floor.D. The steel ball exerts the greater force. Since it starts with some momentum and it reverses the direction of…
movement. 12. A small car meshes with a large truck in a head-on collision. Which of the following statements concerning the momentum during the collision are correct? * a. The momentum of the car-truck system is conserved, but the momentum of each one separately is not conserved. b. The momentum of the truck is conserved. c. The momentum of the truck and the car are each conserved. O d. The momentum of the car is conserved. O e. The car and truck must undergo the same change in speed. hp 7. 8