Motion
This is the total distance a car travels if it starts at 0m, drives +50m and then -20m?
What is 70M?
True or False: Acceleration only occurs when an object speeds up.
What is FALSE?
This is what a flat, horizontal line indicates on a distance/time graph.
What is NOT MOVING/AT REST?
An object is in motion if it changes position relative to this.
What is a REFERENCE POINT?
A car is traveling at a constant speed of 60mph around a circular track. Is the car accelerating? Why or why not?
What is YES because it is CHANGING DIRECTION?
This is what a diagonal line sloping upward means on a speed/time graph.
What is CONSTANT ACCELERATION?
This is how fast a ball appears to be moving to an observer standing on the sidewalk if a student on a bus moving 10m/s throws a ball forward at 2m/s.
What is 12M/S?
Compare the slopes: If Line A is steeper than Line B on a distance/time graph, which object is moving faster?
What is LINE A?
A box is pushed 10N to the right and 10N to the left. Are these forces balanced or unbalanced? What is the net force?
What is BALANCED and 0N?
This is the law that states for every action, there is an equal and opposite reaction.
What is NEWTON'S 3RD LAW?
This is the reason why two students measuring the same moving object might record different final position coordinates.
What is THEY CHOSE DIFFERENT REFERENCE POINTS/STARTING POINTS?
This is the motion of an object if its acceleration is 0m/s^2.
What is IT COULD BE AT REST or MOVING AT A CONSTANT SPEED IN A STRAIGHT LINE.
A speed/time graph shows a horizontal line at 5m/s for 10 seconds. How far did the object travel?
What is 50M?
A 5kg cart and a 50kg cart are pushed with the same 20N force. Which cart will have a greater change in motion? Why?
What is the 5K/G CART because it has LESS MASS?
If a 100kg linebacker hits a 70kg quarterback and neither of them move, which person exerted more force on the other?
What is THE EXERTED THE SAME FORCE?
Read this sentence: "The hiker noted their position was +5km from the base camp." Identify the reference point and the meaning of the positive sign.
What is BASE CAMP and MOVING AWAY.
This is what an object is doing if it is described as having "negative acceleration" while moving in a "positive direction."
What is IT IS SLOWING DOWN.
This is what the line looks like on a speed/time graph for an object that is slowing down at a constant rate.
What is a STRAIGHT DIAGONAL LINE SLOPING DOWNWARD TOWARD THE X-AXIS?
This is what you need to do to the mass of an object if you want to double the acceleration of it but keep the force the same.
What is CUT THE MASS IN HALF?
Why don't action and reaction forces "cancel out" like balanced forces do?
What is THEY ACT ON TWO DIFFERENT OBJECTS?