Lecture 7 Flashcards
How are internal forces developed?
Actively vs. Passively
What is the difference between mass and weight?
Mass is the amount of matter in an object while weight is the amount of gravitational force acting on an object.
Describe the Impulse-Momentum Relationship?
Impulse is equal to momentum, quantity of motion of an object. The relationship is proportional and changes in momentum depend on the amount of force and how long this force is applied.
What is the Law of Inertia?
An object continues in its state of rest or constant motion, unless acted upon by a net force.
What is the Law of Acceleration?
Change in motion of an object is proportional to the force acting on it and in the direction in which the force acts.
When do you want to decrease an object’s momentum?
When you are catching something, landing from a jump etc.
What is important to remember with the time at which the force is being applied?
It’s NOT the same as flight time.
