How long will it take her to reach the bottom of the hill, assuming she starts from rest and accelerates uniformly, if the elevation change is 340 m?
What does it mean "the elevation change is 340 m" ?
My answer was 12.43 s
Is it right? If not how do I do it?
2006-10-22 08:59:07 · 5 answers · asked by sleepy 1 in Science & Mathematics ➔ Physics
elevation change is your d
d=1/2 at^2
so
340=4.9t^2 using 9.8 for a
i get 8.33s
2006-10-22 09:02:12 · answer #1 · answered by Anonymous · 0⤊ 0⤋
The time taken would depend on the slope of the plane. This decides the acceleration of the object down the hill. Consider this, two planes which are parallel and seperated by 340m would meet at infinity. The object would reach the bottom after infinite time( it never reaches the other plane).
2006-10-22 16:30:30 · answer #2 · answered by Invincible 2 · 0⤊ 0⤋
Elevation means the vertical height of the hill to the bottom of the hill. In order to answer you question, you must provide the slope or angle that the side of the hill makes with the ground level
2006-10-22 16:05:07 · answer #3 · answered by drjhbmd 1 · 0⤊ 1⤋
"reach the bottom of the hill" implies she's at the top and going down a slope. The shallower the hill, the longer it should take to get to the bottom, which means you need to divide by sine of the angle of the slope.
2006-10-22 16:06:52 · answer #4 · answered by arbiter007 6 · 0⤊ 1⤋
yes agreed.
2006-10-22 16:03:16 · answer #5 · answered by Jack A 1 · 0⤊ 0⤋