There is a right way and a wrong way to answer conceptual type
Suppose you are driving in a convertible with the top
down. The car is moving to the right at a constant
velocity. A projectile is launched from a barrel that is pointed
straight upward. In the absence of air resistance, where does the
In the same position.
This answer, although correct, does not stand on its
own. The reader is starving for information and it has not been
provided. No meat in the sandwich.
Since there is no air resistance to slow the projectile down,
it experiences no acceleration in the horizontal direction. It's
speed remains equal to that of the barrel and the car. Therefore,
the projectile remains above the barrel at all times and would land in
This answer is full of information (meat). Reader is
full and satisfied.
The solution to a problem must flow. The reader should be
able to easily see how you obtained the solution. For example, a
poor solution would be like something below;
A fisherman reels in 11 m of line while pulling in a fish
that exerts a constant resisting force of 10 N. If the fish is
pulled in at a constant velocity, how much work is done on it by the
tension in the line?
(11)(10) = 110 J or the work done is equal to 110 J.
Even though both of the answers are correct, both are
meaningless. They do not show how you
arrived at the solution. No diagram has been drawn either.
A better way would look like the following;
W = Fcos(q)x
= (10 N)cos (0)(11 m)
= 110 J
Formula and units are important in
problem solving. Make sure that you use them! Also,
solutions need to be clear and concise!