Force
There is friction in space.
True or false?
The full name of the scientist responsible for outlining the laws of motion.
Sir Isaac Newton
What are the names of Dr. Jeff's two assistants?
Adam and Caroline
The show that fired a ball from a moving truck was called...
Mythbusters.
Give an example of Newton's third law.
TD.
The unit of measurement for force.
Newton
Define Newton's first law.
An object won't change its motion unless acted upon by a force.
True or False
Moving the people on the rope in the simulation changed the outcome.
False
The two colors of the characters in the simulation were...
Red and blue.
Explain what will happen if two people are pulling a cart in opposite directions with equal amounts of force.
The cart will not move.
For every action, there is...
an equal and opposite reaction.
The tendency of an object to keep doing what it is doing, whether that is moving or staying stationary, is called...?
Inertia
Explain the balloon on the line DIY.
TD
Define net force.
The combined force acting on an object.
If two people are pushing a cart with 60N of force each, what is their combined net force?
120N
The formula for calculating force.
f = m x a
Define Newton's second law.
Heavier objects need a larger force to move them.
What are three careers that necessitate an understanding of force?
Engineers for car companies and airplanes, etc...
Define friction.
The resistance that one surface or object encounters when moving over another.
If a person is pulling on a rope with 50N of force, and their opponent is pulling in the opposite direction with 70N of force, what is the net force?
20N
Name four forces.
Gravity, air resistance, friction, push, pull...
Define Newton's third law.
For every action there is an equal and opposite reaction.
What would be an example of Newton's second law in action?
One example is pushing a car or pushing a shopping cart. You would need much more force to push a car the same distance as a shopping cart.
If someone wants to weigh less, they should weigh themselves when the elevator is going up.
True or false?
False
Down
If six people are playing tug of war, and competing in teams of three, how should they be divided to ensure a fair game?
TD.