Forces and Motion
As a NASA engineer, you must design, build, and test a transport vehicle for future interplanetary missions.
How can we design and test vehicles that can land safely?
Student Take Aways:
Forces affect the movement of an object.
A force is a push or a pull that can change an object's velocity. Heavy objects are harder to move and stop. For every action, there is an equal and opposite reaction.
Sir Isaac Newton
"If I have seen further it is by standing on the shoulders of Giants."
Newton's 1st Law of Motion
"Objects at rest, stay at rest. Objects in motion, stay in motion. With the same speed and direction,
unless acted upon by an unbalanced force."
If an object is moving, it will continue moving with a constant velocity (in a straight line and with a constant speed) unless a net force acts on it.
If an object is at rest, it will stay at rest unless a net force acts on it. Inertia is the tendency of the motion of an object to remain constant in terms of both speed and direction.
“Change has to be hard because you're fighting against inertia.”
― James Thornton
It will take more force to change an objects direction; whether at rest or in motion.
Force = Mass x Acceleration
Newton's 2nd Law of Motion
Force influences the shape and motion of an object.
Mass is the measure of the amount of matter in an object. Acceleration is the ratio of its change in velocity and time taken.
Ken Griffey Jr. quickly changes the direction of a fastball.