Thread: please help -very urgent

1>how much time will it take for an object to fall to earth from 2000ft.

2>In a register are 20 bills(fives and tens) worth $200.how many are fives in the register

Originally Posted by bobby77

1>how much time will it take for an object to fall to earth from 2000ft.

2>In a register are 20 bills(fives and tens) worth $200.how many are fives in the register

1>sorry, I have to do it in metres (2000ft=609.6m)
d=1/2gt^2
609.6=1/2x9.8xt^2
t=11.154 sec (approx)

2>No fives... 20x10=200

Originally Posted by Sophie

1>sorry, I have to do it in metres (2000ft=609.6m)
d=1/2gt^2
609.6=1/2x9.8xt^2
t=11.154 sec (approx)

2>No fives... 20x10=200

To do 1> in English units, replace g with 32 ft/s^2.

-Dan