Answer! brainliest for answer
a 60 kg skateboarder is at the top of a ramp with a slope of 15°. if the skateboarder begins riding the board down the ramp, how long would it take to reach a velocity of 15.22 m/s? (ignore friction and round to one decimal place.)
0.1 s
2.5 s
6.0 s
152.2 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.