Motion Master Quiz Motion Master
Physics & Mechanics Unit Assessment
Student:
Date:
Part I: Terminology Match
Match each term on the left with its correct scientific definition on the right by writing the corresponding letter in the space provided.
1. Gravity
2. Acceleration
3. Air Resistance
4. Impact Force
5. Cushioning
6. Momentum
A. The property of a moving object that depends on its mass and velocity.
B. A friction-like force that opposes the motion of objects moving through the atmosphere.
C. The force exerted by one object on another during a sudden collision or collision event.
D. An attractive force between any two objects with mass.
E. The rate at which an object changes its velocity over time.
F. Material or mechanisms used to absorb shock and reduce the intensity of an impact.
Part II: The First Law
7. Which famous scientist is responsible for formulating the three laws of motion that we study today?
8. State Newton's First Law of Motion (often called the Law of Inertia) in your own words.
Challenge Thought:
If an astronaut throws a ball in deep space, far away from any gravity or air, what will happen to the ball according to the law you just described? Explain briefly.
Motion Quiz Answer Key Answer Key
Motion Master Quiz Guide
Teacher Reference
Part I: Terminology Match
D 1. Gravity An attractive force between any two objects with mass.
E 2. Acceleration The rate at which an object changes its velocity over time.
B 3. Air Resistance A friction-like force that opposes the motion of objects moving through the atmosphere.
C 4. Impact Force The force exerted by one object on another during a sudden collision.
F 5. Cushioning Material used to absorb shock and reduce the intensity of an impact.
A 6. Momentum The property of a moving object that depends on its mass and velocity.
Part II: The First Law
7. Famous Scientist:
Sir Isaac Newton
8. Newton's First Law (Law of Inertia):
An object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
9. Challenge Thought Explanation:
The ball will continue to move in a straight line at a constant speed forever (or until it hits something). This is because there are no unbalanced forces (like friction, air resistance, or gravity) to change its state of motion.
Inertia Insights Slides Motion Mechanics
Understanding Forces, Inertia, and Impact
Physics
Grade 6-8
Pulling Power
Gravity
The invisible force of attraction between all objects with mass.
Acceleration
The rate at which an object's velocity changes over time (speeding up, slowing down, or changing direction).
Mass in Motion
Momentum
"Inertia in motion." It depends on how much stuff is moving (mass) and how fast it's going (velocity).
Formula: p = m × v
Air Resistance
Fluid friction. The air pushing back against a moving object.
The Big Stop
Impact Force
The massive force applied when two objects collide. The faster the stop, the bigger the force!
Cushioning
The "Time Tactic." By adding soft material, we increase the time it takes to stop, which lowers the impact force.
The Law of Inertia
Newton's 1st Law
"An object at rest stays at rest, and an object in motion stays in motion unless acted upon by an outside force."
Inertia: An object's resistance to changing its motion.
Sir Isaac Newton
The mathematician and physicist who changed everything in 1687 with the publication of the Principia.
Three Laws of Motion
Universal Gravitation
Invention of Calculus
