Maria is standing at the edge of a cliff that is 15 m high over a canyon. She throws a rock upward off the side of the cliff. Right before the rock reaches the canyon floor, it has a speed of 13 m/s. What was the rock’s total displacement?
What was the initial velocity of the rock?
What was the total trip time?
What was the maximum height above the canyon floor reached by the rock?

an energy transformation flow diagram is shown

where is it ?

its c i just checked it

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

b. false

explanation:

suppose a rock in free fall is dropped off a cliff. after falling for 5 seconds, its speed would not be 100 m/s.