1 points Save Answr In a 2D perfectly elastic collision the total linear momentu
ID: 1434482 • Letter: 1
Question
1 points Save Answr In a 2D perfectly elastic collision the total linear momentum after th collision is the total linear momentum before the collision. smaller than larger than QUESTION 2 2 points Save Answe As shown in the figure below, a billiard ball traveling at 4m/s in the positive x-direction hits another (identical) billiard ball which is at rest before collision. After the collision the first ball is moving at an angle of 45° above the x-axis while the other one is moving at an angle of 450 below the x -axis. Assume that the mass of each ball is 250 g and the collision is perfectly elastic. What is the total kinetic energy of the system before the collision? Before Collision After Collision 1 points Save Answer In the situation described in problem 2, what is the total linear momentum in the x-direction before the collision? 1 points Save Answe In the situation described in problem 2, what is the total linear momentum in the y-direction before the collision?Explanation / Answer
1 equal to
2 2 J, KE = 0.5 *.25*4^2
3 linear momentum p = mv = 0.25 * 4 = 1 kg m/s
4 zero , as velocity along y is zero for any of the objects
5. linrear momentum along x after collision = 2*0.250*2 = 1 kg m/s
6 linrear momentum along y after collision = 2*0.250*2 = 1 kg m/s
7 elastic
8 only in inelastic
9 only the ke is conserved
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.