x = 1/2 G t2 = 1/2 (9.8) (2)2 = 4.9 x 4 = 19.6 meters
x = 1/2 G t2 = 1/2 (32.2) (2)2 = 16.2 x 4 = 64.4 feet
a. 144 feet b. 96 ft/sec.
The speed is 44.4... repeating metres per second.
There is no reason for the object to change.
381 metres
4 seconds
44 meters tall
1.56 seconds
176.4 meters
Ignoring air resistance . . .H = 1/2 G t2t = sqrt(2H/G) = sqrt(2 x 363 / 32.2) = 4.75 seconds (rounded)
Disregarding air resistance, what is the speed of a ball dropped from 12 feet just before it hits the ground? (Use 1 ft = 0.30 m, and use g = 9.8 m/s2.)
19.6 meters / 64.4 ft
6 feet