Velocity & Motion
What is Velocity?
an object's speed in a particular, specified direction
How is the pod usually supposed to stop?
The thrusters fire in the opposite direction?
What is the term for the amount of matter inside an object , measured in kilograms (kg)?
Mass
During any collision between two physical objects, the forces exerted on each object are in which direction?
Opposite directions
What are the five distinct ways that the motion or velocity of an object can change?
starting to move , stopping moving , speeding up , slowing down , and changing direction
How would the pod have switch directions?
Will an object with less mass or more mass experience a greater change in velocity?
less mass
What is the formula for Newton's 2nd Law of Motion?
F=ma
What agent is required in order to change an object's velocity?
A force (push or pull)
How would the pod have slowed down?
A weak force in the opposite direction
In an experiment testing launcher forces on a golf ball vs. a ping pong ball what is the independent and dependent variable?
Independent - mass of the ball
Dependent - velocity/change in speed
What is Newton's Third Law of Motion?
The law of motion stating that forces always occur in equal and opposite pairs (action/reaction)
Force and velocity are a ________ _________ relationship
cause and effect
There is no friction in space, so if there was no force to stop the pod it would keep moving forever and eventually speed up.
False, it would continue moving at a constant velocity forever
If the pod is carrying more asteroid samples than normal, will this slow down or speed up the pod?
Slow down and cause a collision
What is Newton's 2nd Law of Motion?
The scientific law stating that how fast an object accelerates depends on the net force pushing it and the object's mass
A launcher pushes a sphere along a track. The sphere covers 100 cm in 2 seconds heading toward the right. What is its exact velocity?
50cm to the right
If pods on two separate missions fired identical thruster forces, but one stopped while the other reversed, what physical variable of the pod must have been different?
Mass
What is friction?
The resistive force exerted between an object and the surface it moves across, which is notably absent when objects travel in deep space
What is action-reaction force pairs in the balloonexperiment?
The escaping air pushing backwards and which creates a forward thrust on the balloon