projectile motion problem?

Question

A physics professor did daredevil stunts in his spare time. His last stunt was an attepmt to jump accross a river on a motorcycle. The takeoff ramp was inclined at 53 degrees, the river was 4 meters wide, and the far bank was 15 meters lower than the top of the ramp. The river itself was 100 meters below the ramp. Ignore air resistance.
a.) What should his speed have been at the top of the ramp to have just made it to the edge of the far bank?
b.) If his speed was only half the value found in (a), where did he land?

Answer 1

Hehehe. This is *exactly* the same question as the basketball question I told you how to solve.

Since you still seem to be looking for someone to solve that problem for you, you obviously haven't figured out how to use the one-dimensional laws of motion.

I am curious about one thing: Assuming that you find someone who's willing to take the time to do your homework for you, do you suppose that they'll be willing to show up and take your exams as well?

If you want to hire me to do it, my standard consulting rate is $125/hr. (US dollars) plus living and travel expenses.

And yes, there are a *lot* of companies that are more than happy to pay that kind of money for my services. Maybe that has something to do with the fact that I actually learned this stuff (as well as a lot of other 'stuff').

OTOH, if you don't want to trouble yourself by taking the time and doing the work (yeah, *work*) required to learn this, there's always a backup career flipping burgers at Micky D's


Doug

Answer 2

OK, get a divorce the preliminary pace of the ball into horizontal and vertical accessories. Gravity alterations the vertical element best, so there shall be a steady horizontal pace of (20 m/s) sin80 = 19.7 m/s