- #1

mcr

- 6

- 0

I'm new at this and I need some help with the following practice problems:

1) At what angle relative to the horizontal must an object be

launched if its minimum velocity in flight is 28% of its launch

velocity? The answer is to be in degrees. I have the answer to be 73.7.

2) During a footrace, a fast runner runs at a 6 min/mi pace, and a

slow runner runs at a 7 min/mi pace. The fast runner passes the slow

runner. After a 2 sec delay, the slow runner initiates an acceleration,

catching up with the fast runner in 968 ft. What is this acceleration?

The answer is to be in ft/sec^2 and the answer is .0798.

I'm confused on both and don't know how to get started.