The rocket-driven sled sonic wind no. 2, used for investigating the physiological effects of large accelerations, runs on a straight, level track that is 1080 m long. starting from rest, it can reach a speed of 1560 km/h in 1.70 s.
a) compute the acceleration in m/s^2.
b) compute the acceleration in gís.
c) what is the distance covered in 1.70s?

A) acceleration = [change in velocity] / [time interval] = [final velocity - initial velocity] / t = 

acceleration = [1560 km/h -0] / 1.7 s = 1560 km/h / 1.7 s

convert the velocity to m/s: 1560 km/h * 1000 m/ km * 1h/3600 s = 433.33 m/s

acceleration = 433.33 m/s / 1.7 s = 254.9 m/s^2

b) Acceleration in terms of g

 acceleration = 254.9 m/s^2 /[ 9.8 m/s^2 / g] = 26 g.

This is the acceleration is 26 times the gravitational acceleration.

c) distance

d = a*t^2 / 2 = 254.9 m/s^2 * (1.70s)^2 / 2 = 88.2 m

Is there any opitions? if you have the periodic table, the noble gases are 8a family, the halogen are the 7a family, and the nonmetal are  carbon, nitrogen, phosphorus, oxygen, sulfur, selenium, fluorine, chlorine, bromine, iodine and astatine.