November 19, 2014 Exam 3 fretionless tabletop with a & (o points) Block A (mass

Question

November 19, 2014 Exam 3 fretionless tabletop with a & (o points) Block A (mass 2.5kg) is sliding to the right on a horizontal, Block A collides with of just before oollides with Block B (mass is initially at rest. collision. Block B and they stick together, traveling off at a 5.0 right just after the speed of 4.5m/s to the (a) How fast is Block A traveling just before it hits Block B? (a) What is the total kinetic energy of the two blocks after the collison? momentum of (c) The two blocks stuck together collide with a third block. The third blockhas a 33.75 kgm/s. In hich direction are the two stuck together blocks moving? wi m 2,5Eg Vai 33.15 ests) 13710

Explanation / Answer

1.
using conservation of linear momentum
mv = (m+M)V
v = 7.5*4.5/2.5
=>v(initial velocity) 13.5 m/s
2.
Total Kinetic energy = 1/2 (7.5)*4.5*4.5 = 75.9J
3. They are still moving right!

Related Questions

Navigate

• Browse (All)
• Browse N
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.