Ulu) JIiullng aCTUSS a desk at U.4m/s 2. A 2kg billiard ball moving at 4 m/s to the right hits an 8kg bowling ball originally at rest. The billiard ball then moves in the opposite direction at 2 m/s. The collision is elastic. That is, energy is conserved. What is the velocity of the bowling ball after the collision? 3. A 10 kg block is dragged by an applied force of 20N, which makes an angle 600 with the horizontal. The coefficient of friction of the surface is u, = 0.2 %3D The block starts from rest and is pulled a distance of 7m. a) Calculate the work done by the applied force? b) Calculate the work done by the force of friction? c) What is the resultant work done? d) What is the final velocity of the block? Recall: work done equals change in kinetic energy 4. 4) On a frictionless surface, a block with mass M1 =0.50 kg moving at 4 m/s the right collides with a mass M2= 0.20kg block moving to the left at 2m/s. The bodies move along the x-axis only. a) If the two blocks stick together after the collision, what is the final velocit (magnitude and direction? b) How much mechanical energy is lost?
Ulu) JIiullng aCTUSS a desk at U.4m/s 2. A 2kg billiard ball moving at 4 m/s to the right hits an 8kg bowling ball originally at rest. The billiard ball then moves in the opposite direction at 2 m/s. The collision is elastic. That is, energy is conserved. What is the velocity of the bowling ball after the collision? 3. A 10 kg block is dragged by an applied force of 20N, which makes an angle 600 with the horizontal. The coefficient of friction of the surface is u, = 0.2 %3D The block starts from rest and is pulled a distance of 7m. a) Calculate the work done by the applied force? b) Calculate the work done by the force of friction? c) What is the resultant work done? d) What is the final velocity of the block? Recall: work done equals change in kinetic energy 4. 4) On a frictionless surface, a block with mass M1 =0.50 kg moving at 4 m/s the right collides with a mass M2= 0.20kg block moving to the left at 2m/s. The bodies move along the x-axis only. a) If the two blocks stick together after the collision, what is the final velocit (magnitude and direction? b) How much mechanical energy is lost?
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
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Chapter1: Units, Trigonometry. And Vectors
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Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Can you please answer question 2 and show all of the steps
Transcribed Image Text:Ulu) JIiullng aCTUSS a desk at U.4m/s
2. A 2kg billiard ball moving at 4 m/s to the right hits an 8kg bowling ball
originally at rest. The billiard ball then moves in the opposite direction at
2 m/s.
The collision is elastic. That is, energy is conserved. What is the velocity of
the bowling ball after the collision?
3. A 10 kg block is dragged by an applied force of 20N, which makes an angle
600 with the horizontal. The coefficient of friction of the surface is u, = 0.2
%3D
The block starts from rest and is pulled a distance of 7m.
a) Calculate the work done by the applied force?
b) Calculate the work done by the force of friction?
c) What is the resultant work done?
d) What is the final velocity of the block?
Recall: work done equals change in kinetic energy
4. 4) On a frictionless surface, a block with mass M1 =0.50 kg moving at 4 m/s
the right collides with a mass M2= 0.20kg block moving to the left at 2m/s.
The bodies move along the x-axis only.
a) If the two blocks stick together after the collision, what is the final velocit
(magnitude and direction?
b) How much mechanical energy is lost?
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