Sandra moves 14 m in 2 minutes. what is sandra's average velocity (in m/s)?

Velocity is displacement over time, D/T, the units for velocity is m/s. First we must convert 2 minutes to seconds. 2 minutes = 120 seconds. Our displacement is given so now we fill in the blanks

V= (displacement)/(time)

V= d/t

V= 14m/120s

V= 0.1167 m/s

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.

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