A 14,000-kg boxcar is coasting at 1.50 m/s along a horizontal track when it sudd

Question

A 14,000-kg boxcar is coasting at 1.50 m/s along a horizontal track when it suddenly hits and couples with a stationary 10,000-kg boxcar. What is the speed of the cars just after the collision? 9. A 475-gram ball is traveling horizontally at 12.0 m/s to the left when it is suddenly struck horizontally by a bat, causing it to reverse direction and initially travel at 8.50 m/s to the right. If the bat produced an average force of 1275 N on the ball, for how long (in milliseconds) was it in contact with the ball? 10. A firecracker breaks up into two pieces, one of which has a mass of 200 g and flies off along the +x-axis with a speed of 82.0 m/s. The second piece bas a mass of 300 g and flies off along the +y-axis with a speed of 45.0 m/s. What is the total momentum of the two pieces? A) 361 kg . m/s at 56.3 degree from the +x-axis B) 93.5 kg . m/s at 28.8 degree from the +x-axis C) 21.2 kg . m/s at 39.5 degree from the +x-axis D) 361 kg . m/s at 0.983 degree from the +x-axis E) 21.2 kg . m/s at 56.3 degree from the +x-axis 11. The graphs shown show the magnitude F of the force exerted by a spring as a function of the distance x the spring has been stretched. For which one of the graphs does the spring obey Hooke's law?

Explanation / Answer

Chegg removed the "Edit Point Total" feature and now no one is answering questions

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

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