Motion
This is calculated by dividing distance by time.
What is speed?
Equal forces pushing in opposite directions result in this type of force situation.
What are balanced forces?
This law explains why a penny stays still when an index card is flicked away.
What is Newton’s First Law of Motion?
The slope of a distance‑time graph represents this.
What is speed?
This force opposes motion between two surfaces touching.
What is friction?
A dog travels 100 feet in 20 seconds. Its speed is this many feet per second.
What is 5 feet per second?
Forces that cause an object to accelerate are called these.
What are unbalanced forces?
“For every action, there is an equal and opposite reaction” describes this law.
What is Newton’s First Law of Motion?
The slope of a velocity‑time graph represents this.
What is acceleration?
A block on carpet requires more force to move because carpet has more of this.
What is friction?
An object on a distance‑time graph that curves upward is doing this.
What is speeding up (accelerating)?
A force of 30 N right and 10 N left produces this net force.
What is 20 newtons to the right?
This law explains how force, mass, and acceleration are related.
What is Newton’s Second Law of Motion?
A flat line on a velocity‑time graph means the object is doing this.
What is moving at constant velocity?
Increasing the mass of an object usually causes the force needed to move it to do this.
What is increase?
This type of motion is shown when an object travels the same distance in equal amounts of time.
What is constant speed?
31 N right and 32 N left will cause an object to do this.
What is move (or accelerate) to the left?
A person pushes a raft and moves backward. This happens because of these forces.
What are action and reaction forces?
A downward‑sloping velocity‑time graph shows this type of motion.
What is slowing down (negative acceleration)?
A block slides slower on carpet than wood because carpet causes this.
What is greater friction?
If a distance‑time graph becomes less steep over time, the object is doing this.
What is slowing down (decelerating)?
If an object is moving at a constant speed, the net force acting on it is this.
What is zero newtons?
If the same force is applied to different masses, the object with greater mass will have this.
What is smaller acceleration?
A rocket’s velocity‑time graph that curves upward shows this change in motion.
What is increasing velocity (acceleration)?
Using a heavier mass on a spring scale will cause the force reading to do this.
What is increase?