8.48 • A 10.0 g marble slides to the left at a speed of 0.400 m/s on the frictionless, horizontal surface of an icy New York side- walk and has a head-on, elastic collision with a larger 30.0 g marble sliding to the right at a speed of 0.200 m/s (Fig. E8.48). (a) Find the velocity of each marble (magnitude and direction) after the collision. (Since the collision is head-on, all motion is along a line.) (b) Calculate the change in mo- mentum (the momentum after the collision minus the momentum before the collision) for each marble. Compare your values for each marble. (c) Calculate the change in kinetic energy (the kinetic energy after the Figure E8.48 0.200 m/s 0.400 m/s 30.0 g 10.0 g

8.48 • A 10.0 g marble slides to the left at a speed of 0.400 m/s on the frictionless, horizontal surface of an icy New York side- walk and has a head-on, elastic collision with a larger 30.0 g marble sliding to the right at a speed of 0.200 m/s (Fig. E8.48). (a) Find the velocity of each marble (magnitude and direction) after the collision. (Since the collision is head-on, all motion is along a line.) (b) Calculate the change in mo- mentum (the momentum after the collision minus the momentum before the collision) for each marble. Compare your values for each marble. (c) Calculate the change in kinetic energy (the kinetic energy after the Figure E8.48 0.200 m/s 0.400 m/s 30.0 g 10.0 g

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter8: Linear Momentum And Collisions

Section: Chapter Questions

Problem 18CQ: A Small pickup truck that has a caliper shell slowly coasts toward a red light with negligible...

See similar textbooks

Similar questions

You hold a slingshot at arms length, pull the light elastic band back to your chin, and release it to launch a pebble horizontally with speed 200 cm/s. With the same procedure, you fire a bean with speed 600 cm/s. What is the ratio of the mass of the bean to the mass of the pebble? (a) 19 (b) 13 (c) 1 (d) 3(e) 9
A Small pickup truck that has a caliper shell slowly coasts toward a red light with negligible friction. Two dogs in the back of the truck are moving and making various inelastic collisions with each other and the walls. What is the effect of the dogs on the motion of the center of mass of the system (truck plus entire load)? What is their effect on the motion of the truck?
Repeat the preceding problem for the case when the initial speed of the second object is nonzero.
Basilisk lizards can run across the top of a water surface.With each step, a lizard first slaps its foot againstthe water and then pushes it down into the water rapidly enough toform an air cavity around the top of the foot. To avoid having topull the foot back up against water drag in order to complete thestep, the lizard withdraws the foot before water can flow into theair cavity. If the lizard is not to sink, the average upward impulseon the lizard during this full action of slap, downward push, andwithdrawal must match the downward impulse due to the gravitationalforce. Suppose the mass of a basilisk lizard is 90.0 g, the massof each foot is 3.00 g, the speed of a foot as it slaps the water is1.50 m/s, and the time for a single step is 0.600 s. (a) What is themagnitude of the impulse on the lizard during the slap? (Assumethis impulse is directly upward.) (b) During the 0.600 s duration ofa step, what is the downward impulse on the lizard due to the gravitationalforce? (c) Which…
1) A marble launcher fires a marble at an angle of 50° to the horizontal with an initial velocity of 6.2 m/s. Assuming no air friction, what is the maximum height above the launcher's muzzle that the marble reaches?
Problems 1. A 3.7kg Superball hits the floor with a speed of 6m/s, and it bounces back up into the air with a speed of 4m/s. If the collision takes 0.03s, what is the average normal force of the floor on the ball? You can use the table but you don't have to. 12112 Pf Y •
A reckless coyote engineer straps on a pair of ice skates and attaches a rocket capable of producing 5.00 x 10'N of thrust to his back. Together, the coyote and the rocket have a mass of 1.20 x 10 kg. If the coyote starts at rest on level, frictionless ice and bends over such that the rocket thrust is parallel to the ice, what is his final •speed v if the rocket burns for 4.40 s? m/s
A 61.00 kg hockey play skates due North on a frictionless ice rink with a velocity of 10.00 He is tackled by a second hockey player of mass 78.00 kg who was initially skating due West at velocity 15.00 Assume the collision is perfectly inelastic, resulting in the two players "sticking together." m S W of Ꮎ N S E m S
A 100 g granite cube slides down a 40° frictionless ramp. At the bottom, just as it exits onto a horizontal table, it collides with a 200 g steel cube at rest. a) How high above the table should the granite cube be released to give the steel cube a speed of 1.50 m/s.? b) How far back up the incline granite cube will go? Yo Before After (v))s = 0 cm/s (v2)s = 150 cm/s (v2)M 40°
•• 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?ts equilibrium length, and whose force constant is 25.0N>m. The block rests on a frictionless surface. A 0.0500-kg wad of putty is thrown horizontally at the block, hitting it with a speed of 8.94 m>s and sticking. How far does the putty–block system com- press the spring?]
A 500 g cart is released from rest 1.00 m from the bottom of a frictionless, 30.0∘ ramp. The cart rolls down the ramp and bounces off a rubber block at the bottom. The rubber block experiences a force over 26.7ms with the maximum of the force being 200N.
Physics Mr. Neptune picks up his ballet dance partner Ms. Pluto who masses 45 kg and overcoming gravity tosses her upwards and forwards with an average applied force of 220 lbs [Fwd 60o Up] for 0.500 s. Gravity is acting on Ms. Pluto as well. Determine her final velocity and then determine how far away she will land if he releases her from a height of 2m Answer: