A hockey player is standing on his skates on a frozen pond when an opposing player, moving with a uniform speed of 4.0 m/s, skates by with the puck. After 2.80 s, the first player makes up his mind to chase his opponent. If he accelerates uniformly at 0.14 m/s2, determine each of the following: a. How long does it take him to catch his opponent?
b. How far has he traveled in that time?

a)

b)

Explanation:

From the question we are told that

Speed of opposing player

First player chase his opponent after

Acceleration of  first player

Let time of catch be  

a)Generally the Equation for distance covered is mathematically given as follows

Distance to catch First opponent

Distance to covered Second opponent

Generally when first opponent catch the second opponent it is represented mathematically as

b)Generally the the total time traveled by the first opponent is mathematically given as

the arctic is a region of the planet, north of the arctic circle, and includes the arctic ocean, greenland, baffin island, other smaller northern islands, and the far northern parts of europe, russia (siberia), alaska and canada.

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.