Question

A 12000 kg airplane launched by a catapult from an aircraft carrier is accelerated from 0 to 200 km/h in 3 s. (a) How many times the acceleration due to gravity is the airplane's acceleration?

Answer 1

g = 9.8 m/s

a = 2E5 m / 1.08E4 s^2 = 19 m/s^2

looks like about 2

Answer 2

g = 9.8 m/s^2

a = 2E5 m / 1.08E4 s^2 = 19 m/s^2

looks like about 2

Answer 3

V = 200,000m/3600s = 55.6 m/s = Final velocity.

V = Vo + a*t = 55.6
0 + a*3 = 55.6,
a = 18.52 m/s^2.

18.52m/s^2/9.8m/s^2 = 1.89 Times acceleration due to gravity.