Newton's 1st Law
Term used to describe an object's resistance to changes in its state of motion
What is inertia
Newton's second law
What is f=ma
For every action there is an equal and opposite
What is a reaction
Net force is zero
What is equilibrium
p= m * ______
What is velocity
An object in motion will stay in motion unless acted upon by
What is an outside force
The newton is a unit of
What is force
One force is called the action force and the other is called the
What is a reaction force
arrow drawn to scale: includes magnitude and direction
What is a vector
A change in momentum
What is an impulse
An object with twice as much mass as another object has twice as much
What is inertia
If the force applied to a cart is doubled, acceleration is
What is doubled
You push a crate at a steady speed in a straight line. If the friction force is 75 N, how much force must you apply?
What is 75 N
A block pulled to the left with 15 N and to the right with 5 N at the same time experiences a net force of
What is 10N
The unit for momentum
What is kg*m/s
In the absence of friction if you roll a ball along a level surface it will
what is keep rolling
the acceleration of the object.
45n = 10kg x a
What is 4.5 m/s
When you walk, you push on the floor to the left and the floor pushes on you to the
What is right
The speedometer of an automobile reads
What is instantaneous speed
The impulse-momentum relationship is a direct result of
What is Newton's second law
An object at rest is in _________ Equilibrium
What is static
A heavy ball hangs by a string, with a second string attached to its bottom. A fast pull on the bottom string breaks the
What is the bottom string
A soccer player kicks a rock with 2000 N of force. The rock exerts a reaction force against the player’s foot of
What is 2000 N
an object is moving at a constant speed in a straight line, it is in
The average braking force of a 1000-kg car moving at 20 m/s braking to a stop in 5 s is
What is 4,000 Newtons