Quiz 1a (09.09.2020) Flashcards
Force is a ___ or ____
push; pull
What is inertia?
A property of matter to resist changes in motion
Newton’s First Law of Motion
Every object continues in a state of rest or uniform speed in a straight line unless acted on by a nonzero net force
What is vector quantity?
a quantity whose description requires both magnitude and direction
What are examples of vector quantity?
force, velocity, acceleration
What is net force?
the combination of all forces that act on an object
What is scalar quantity?
A quantity whose description has only magnitude
What are examples of scalar quantity?
mass, volume, speed
What is a resultant?
the sum of two or more vectors
What is the equilibrium rule?
The vector sum of forces acting on a nonaccelerating object equals zero.
The equilibrium rule applies to _____ only
vector quantities
What is support force?
(normal force) - an upward force on an object that is opposite to the force of gravity
An airplane heads due north at 100 m/s through a 30 m/s cross wind blowing from the east to the west. Determine the resultant velocity of the airplane.
104.40 m/s
A mountain climbing expedition establishes a base camp and two intermediate camps, A and B. Camp A is 11200 m east of and 3200 m above base camp. Camp B is 8400 m east of and 1700 m higher than Camp A. Determine the displacement between base camp and Camp B.
20202 m
