Speed
What does speed tell us?
How fast an object is moving
What does it mean when an object accelerates?
A change in motion/velocity
What is a push or a pull called?
Force
How many Laws of Motion did Newton create?
3
A book stays on a desk until someone moves it. Which law?
Newton's First Law
What is the formula for speed?
speed = distance ➗time
True or False: Slowing down is acceleration.
True
What do we call forces that are equal and do not change motion?
Balanced Forces
Newton’s First Law is also called the Law of ________.
Law of inertia
You push a full cart and an empty cart with the same force. The empty cart accelerates more. Which law?
Newton's 2nd Law
A student travels 40 meters in 10 seconds. What is their speed?
4 m/s
Name three ways an object can accelerate.
Speed up
Slow down
change direction
What do we call forces that cause an object’s motion to change?
Unbalanced forces
What does Newton’s Second Law tell us about force, mass, and acceleration?
More force causes more acceleration; more mass requires more force to get the same acceleration
A swimmer pushes water backward and moves forward. Which law?
Newton's 3rd law
A runner travels 100 meters in 20 seconds. What is their speed?
5 m/s
A car goes around a curve without changing its speed. Is it accelerating? Why?
Yes- because changing direction is acceleration even if the speed stays the same
Which has more inertia: a tennis ball or bowling ball? Why?
a bowling ball
What happens to acceleration if you increase the force on an object?
Acceleration increases
Your body moves forward when a car suddenly stops. Which law explains this?
Newton's 1st law - inertia
A student walks 30 meters in 10 seconds, then 20 meters in 5 seconds. During which part were they moving faster?
part 1 = 3 m/s
part 2 = 4 m/s
part 3 = the second part is faster
Give a real-life example of acceleration that does not involve speeding up.
Examples but not limited to: car breaking, a bicycle turning, a runner changing direction
Two students push a box from opposite sides with equal force. What happens to the box and why?
The box does not accelerate because the forces are balanced/net force is zero
Explain Newton’s Third Law in your own words.
every action force has an equal and opposite reaction force
A balloon releases air backward and flies forward. Name the law and explain why it happens.
Newton’s Third Law; the balloon pushes the air backward, and the air pushes the balloon forward.