Pls explain why two cars start a trip of 200 km at the same time. the first car travels at 90 km/h and the second at 110 km/h. how much more time in minutes does it take for the slower car to reach its destination?

The slower car takes 24 more minutes to reach its destination.

Explanation:

Constant speed motion

An object moves at constant speed if the ratio of the distance traveled by the time taken is constant.

Expressed in a simple equation, we have:

Where  

v = Speed of the object

d = Distance traveled

t = Time taken to travel d.

From the equation above, we can solve for d:

d = v . t

And we can also solve it for t:

Two cars move at different speeds and must travel a distance of d=110 km. The first car travels at v=90km/h. It takes a time of:

Converting to minutes:

The second car travels at v=110km/h. It takes a time of:

Converting to minutes:

The slower car takes 133 - 109 = 24 more minutes to reach its destination.

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.