1st Law
Newton’s First Law states that an object at rest will stay at rest unless acted upon _____ force.
Unblanced Force
The mathematical formula that expresses Newton's Second Law.
F=MA
Newton’s Third Law states that for every action force, there is an equal and opposite_______.
Reaction Force
he metric standard unit used to measure force.
Newtons
Seatbelts protect passengers during a sudden crash due to this law of motion.
1st Law
This property of matter describes an object’s tendency to resist any change in its state of motion.
Inertia
If you push a light empty grocery cart and a heavy full grocery cart with the exact same force, this cart will accelerate faster.
Lighter cart
When a swimmer pushes backward against the water, the water pushes the swimmer _______.
Forward
The contact force that opposes motion between two surfaces sliding past each other.
Friction
It takes significantly less strength to kick a soccer ball than a heavy bowling ball due to this law.
2nd
When a school bus stops suddenly, passengers lurch forward due to this law of motion.
Inertia/First Law
If the mass of an object stays constant, doubling the force applied to it will do what to the acceleration.
Double It
When a space rocket launches, hot exhaust gas pushes downward out of the thrusters, causing the rocket to move ______.
Upward
Any change in speed or direction of an object over time.
Acceleration
Stepping off a floating canoe causes you to move forward onto the dock while the canoe shoots backward into the water due to this law.
Between a tennis ball and a bowling ball, the bowling ball has greater inertia because it has more _______.
A toy RC car with a mass of 2kg accelerates at 3m/s The net force pushing the car is this amount.
6N
Action and reaction forces never cancel each other out because they always act on different ____.
Objects
The metric unit used to measure mass.
Kilograms
An object moving at a steady 50mph in a straight line has a net force equal to this value.
In deep space away from gravity and friction, if you throw a baseball, it will keep moving in a straight line at a constant speed forever because of this.
Inertia/First Law
If a 10N force pushes a block and causes it to accelerate at 2m/s , the mass of the block is this.
5kg
A mosquito bumps into the windshield of a fast-moving highway bus. The force exerted by the bus on the mosquito is __________ compared to the force exerted by the mosquito on the bus.
The overall single force acting on an object after all pushing and pulling forces are combined.
Net Force
Bouncing high into the air on a trampoline occurs because you push down on the mat and the mat pushes back up on you due to this law.
3rd Law