please explain answers 1) A ball is thrown straight up into the air Which most a
ID: 2116079 • Letter: P
Question
please explain answers
1) A ball is thrown straight up into the air Which most accuratelyy describes net force acting on ball at highest point in ball's trajectory
a. equal to ball's weight
b. greater than ball's weight
c. less than ball's weight but not zero N
d. zero N
2A fireman slides down a fire pole As he speeds up he tightens his grip on ple thus increasing vertical frictional force that the pole ezxerts on him Whe this force equals the weight of the fireman, what will happen
a. fieman will come to a stop
b. fireman will descend with slower and slower speed
c. fireman will descend with smaller acceleration
d. fireman will continue to descend but with constant speed .
Explanation / Answer
a. equal to ball's weight d. fireman will continue to descend but with constant speed .
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