How is acceleration calculated?
a. initial velocity - final velocity / time
c. final velocity - initial velocity / time
b. initial velocity final velocity / time
d. final velocity / time

Explanation:

Let u is the initial speed of an object and v is the final speed of the object. t is the time taken to reach final speed v. Acceleration of an object is defined as the rate of change of velocity. Mathematically, it is given by :

or

So, the correct option is (c) .

newton's first law of motion

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.