A sledder is at rest atop a 5.0-m high hill. She’s texting and doesn’t realize her sled starting to slip, moving her to the bottom, and then up to the top of the adjacent 3.0-m high hill. How fast is the she going at point (B)? Ignore friction. (round to the nearest hundreth; use g=10m/s^2).

V = 7.75m/s

Explanation:

In this problem, we will consider conservation of energy where gravitational potential energy is converted into kinetic energy.

Please find the attached file for the solution.

d eras and periods

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min