Asked by Dennis
How long must a 25 degree ramp be to slow to a momentary stop a runaway truck moving along a truly horizontal highway at 85 miles per hour
Answers
Answered by
bobpursley
Ignoring friciton, the KE is has must be converted to GPE
1/2 m v^2=mgh
solve for h (convert mph to m/s first)
then, length of ramp at 25 degrees..
sin25=H/L or
length= height h above / sin25
1/2 m v^2=mgh
solve for h (convert mph to m/s first)
then, length of ramp at 25 degrees..
sin25=H/L or
length= height h above / sin25