A group is playing kickball on a flat field. A 750g=0.750kg ball is kicked and has an initial velocity of <8.0, 10.0, 0> m/s after leaving the kicker's foot. How long is the ball in the air assuming it returns to the ground (ignore air resistance)? Note that the y-direction is up-and-down.

A. 2.04 sec
B. 3.26 sec
C. 1.02 sec
D. 0.816 sec
E. 1.63 sec

i don't understand. explain it clearly

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg

i think it would be 5

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