Aboy drops a ball from an observation tower. the ball hits the ground in 5.0 s. what is the ball's velocity at the time of impact?
a. 0 m/s
b. 98 m/s
c. 49 m/s
d. 123 m/s

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explanation:

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the temperature in kelvin of 2.0 dm3 of an ideal gas is doubled and its pressure is increased by a factor of four. what is the final volume of the gas

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