Ahorse began running due east and covered 25km in 4.0hr. what is the average velocity of the hourse?

The correct answer is 6.25 km per hour due east.

Explanation:

We are given that a horse is running due East and covers a distance of 25 kilometers in a time period of 4 hours and we are supposed to find its velocity.

The formula of velocity is similar to speed which is the ration of distance and time.

Velocity = distance / time

So putting in the given values to find the velocity of the horse:

V = 25 / 4

V = 6.25 km / hour

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.