Newton's First Law
Another name for Newton's First Law
the law of inertia
This equation is also known as Newton's Second Law
∑F = ma
According to Newton's Third Law, if you push gently on an object it wil...
push gently on you
A vector tells us these two quantities
magnitude and direction
The person who invented the laws of motion
Sir Isaac Newton
Assuming a single force is applied, the acceleration increases by this amount when the force is tripled
tripled
An elephant weighing 45,000 N stands on the ground. The elephant exerts a net force on the floor of...
45,000 N
Zero acceleration says what about velocity
it's constant
Newton's First Law states an object in motion will
stay in motion
Acceleration is dependent on these two quantities
force and mass
This is the name of the 'reaction' in “For every action there is an equal and opposite reaction.”
normal force
To find the x component of a given vector we us which trig function?
cosine
Inertia depends on this
mass
An object moving at a constant velocity of 5 m/s feels this net force
0 N
This is the direction of the normal force
perpendicular to the surface of the object
What unit is defined as a mass times a length all divided by a time squared
N, Newton
This is the sole cause of a change in an object's movement
net external force
It takes this much force to accelerate an 80 kg man at 6 m/s2
480 N
Will a person in an elevator standing on a scale read the largest number when the elevator is stationary, going up, or going down?
going up
By convention these directions are considered negative
left and down