A 14,000-kg boxcar is coasting at 1.50 m/s along a horizontal ...

[DyllonKazuo]

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?
 
  What will be an ideal response?

Question 2

On the planet Jupiter, a dropped object picks up a speed of 20 m/sec in one second. How fast will it be going at the end of 3 seconds of fall, neglecting air resistance on Jupiter?
 
  A) 40 m/sec B) 80 m/sec C) 60 m/sec D) 180 m/sec E) 20 m/sec

[Li Jun]

Answer to Question 1

0.875 m/s

Answer to Question 2

C

[DyllonKazuo]

Excellent

[upturnedfurball]

Thanks for the timely response, appreciate it