Energy is always needed to preform anything, and chemical energy is one form of energy. Chemical energy is a part of chemical reactions because it involves teh chemicals.
Here's some example of a statement that describes the way to making a good decision: Make a decision based on the evaluation of consequences involving you and others and take action accordingly. Hope this helps!
W = F x d
F: 450 N
d = 10 m
plug your variables into the equation to get W = 450N x 10m
A distance of d is covered with 53 mile/hr initially.
Time taken to cover this distance t1 = d/53 hour
Next distance of d is covered with x mile hours.
Time taken to cover this distance t2 = d/x hours.
We have average speed = 26.5 mile / hour
= Total distance traveled/ total time taken
=