TalibanNinja said:i don't understand what the "r" represents.
TalibanNinja said:could you explain what bold r means, and what r means
Mechanics is a branch of physics that deals with the motion and forces of objects.
In Year One mechanics, topics such as forces, motion, energy, and momentum are covered.
A force is any influence that causes an object to undergo a change in motion, while a vector is a quantity that has both magnitude and direction.
The magnitude of a force can be calculated using the equation F = ma, where F is force, m is mass, and a is acceleration.
Two vectors are perpendicular if their dot product is equal to zero. This means that the angle between the two vectors is 90 degrees.