A car drives 30 meters north, then turns around and drives 50 meters south. What was its distance?

The total distance moved by the car is 80 metres

Explanation:

Given

North = 30 meters

South = 50 meters

Required

Determine the distance

Distance is a scalar quantity and hence, the total distance is the summation of distance moved in both directions

i.e.

Hence;

The total distance moved by the car is 80 metres

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.

where is the