During a free fall swati was accelerating at -9.8m/s2. after 120 seconds how far did she travel? use the formula =1/2 * t2 to solve your answer. (do not forget to keep units in your answer.)

I believe that formula is incomplete, if it is derived from the kinematic equations.

The full formula being

where:

s is the displacement (or how far she travelled in your question)

u is the initial velocity, which I think can be assumed to be 0 m/s

t is the time taken which is 120 s

a is the acceleration due to gravity which points down in a negative y direction, which is -9.8 m/

Since initial velocity, u, is assumed to be 0 m/s the equation becomes:

Substitute in a = -9.8m/  and t = 120 s and calculate your answer.

Tell me what you calculate the answer to be (don't forget units) and I'll let you know if it's right.

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.

object 2 because all the other ones are wrong