Select the correct answer
a train moving at a constant speed on a surface indined upward at 100 with the horizontal traves a distance of 400 meters in 5 seconds.
calculate the vertical velocity component of the train during this time period
a 41.10 meters second
b 19.23 meters second
c 13.39 metersisecond
d. 41.70 meters/second
e 78.78 metersisecond

Next a skier is pulled by a tow rope up a frictionless ski slope that makes an angle of 15 with the horizontal. the rope moves parallel to the slope with a constant speed of 0.69 m/s. the force of the rope does 800 3 of work on the skier as the skier moves a distance of 8.4 m up the incline. (a) if the rope moved with a constant speed of 2.2 m/s how much work would the force of the rope do on the skier as the skler moved a distance of 8.4 m up the incline? at what rate is the force of the rope doing work on the skier when the rope moves with a speed of (b) 0.69 m/s and (c) 2.2 m/s?

How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by

Which boundary is associated with the building of the himalaya mountains? convergent transform divergent hot spot