Vocabulary
Net Force & Diagrams
Newton's 3rd Law & Collisions
Mass & Acceleration
Experimental Design
100

Defined as a push or a pull exerted on an object.

  • A. Friction
  • B. Inertia
  • C. Force
  • D. Mass

C. Force

100

Student A pushes a cart with 30 N right, and Student B pushes with 20 N right. What is the net force?

  • A.50 N to the right
  • B.50 N to the left
  • C.10 N to the right
  • D.600 N to the right
  • A.50 N to the right
100

Car 1 crashes into Car 2 with a force of 150 N to the right. What force does Car 2 exert back on Car 1?

  • A.0 N (Car 2 does not push back)
  • B.300 N to the left
  • C.150 N to the left
  • D.150 N to the right
  • C.150 N to the left
100

A light foam ball and a heavy rock are the same size. Why is the rock harder to push?   

  • A) The rock is larger   

  • B) The rock has more mass, so it is harder to move   

  • C) The rock has more energy inside it   

  • D) Gravity only pulls on heavy objects   

  • B) The rock has more mass, so it is harder to move   

100

Maya tests if heavier toy trucks slow down faster due to friction than lighter toy trucks. She rolls a 2 kg truck on smooth wood and a .50 kg truck on rough carpet. Is this a fair test?   

  • A) Yes   

  • B) No  

  • B) No  

200

The amount of matter or 'stuff' contained inside an object.

  • A.Net Force
  • B.Collision
  • C.Weight
  • D.Mass



D. Mass

200

A soccer ball rolls right on grass while friction acts to the left. What happens to the ball's speed?

  • A.The ball will reverse direction immediately.
  • B.The ball will speed up to the right.
  • C.The ball will slow down.
  • D.The ball will maintain constant speed.
  • C.The ball will slow down.
200

When a bowling ball strikes a pin, how do the forces compare?

  • A.The pin exerts force only after flying backward.
  • B.The ball's force on the pin is equal in size and opposite in direction to the pin's force on the ball.
  • C.Neither object exerts force on the other; momentum just transfers.
  • D.The bowling ball exerts a much larger force because it is heavier.


  • B.The ball's force on the pin is equal in size and opposite in direction to the pin's force on the ball.
200

When you give each cart the same push, what happens to the speed change as the mass gets larger?   

  • A) The speed change increases   

  • B) The speed change stays the same 

  • C) The speed change decreases (gets smaller)   

  • D) The carts stop completely 

  • C) The speed change decreases (gets smaller)   

200

Why is Maya's test not a fair test?   

  • A) She didn't use enough trucks   

  • B) She changed two variables at the same time (mass and surface type)  

  • C) The trucks were too heavy   

  • D) Wood and carpet have the same friction

  • B) She changed two variables at the same time (mass and surface type)  

300

The result when all individual forces acting on an object are combined together.

  • A.Net Force
  • B.Balanced Forces
  • C.Friction Force
  • D.Impact Force

A. Net Force

300

Two teams pull a tug-of-war rope with 40 N left and 40 N right. Will the rope move quickly?

  • A.Yes, it will move left because left is stronger.
  • B.Yes, it will accelerate toward the right team.
  • C. Yes, it will snap in half due to high tension.
  • D. No, because forces are balanced (0 N net force).
  • D. No, because forces are balanced (0 N net force).
300

Car A (50 kg) and Car B (100 kg) collide head-on with a 300 N impact force. Which car experiences a greater change in motion (acceleration)?

  • A.Both experience the exact same change in motion.
  • B.Neither car changes motion during elastic collisions.
  • C.Car A, because it has less mass.
  • D.Car B, because it is heavier and stores more force.
  • C.Car A, because it has less mass.
300

Based on the data table where a 1kg cart changes speed by 6 m/s and a 2 kg cart by 3 m/s what is the pattern?

  • A) Doubling the mass cuts the speed change in half   

  • B) Mass has no effect on speed change   

  • C) Doubling the mass doubles the speed change   

  • D) Speed change is always constant  

  • A) Doubling the mass cuts the speed change in half   

300

What change should Maya make to fix her plan?   

  • A) Keep the surface constant (roll both on wood or both on carpet)   

  • B) Use different trucks every time   

  • C) Add more weight to both trucks   

  • D) Stop measuring distance  

  • A) Keep the surface constant (roll both on wood or both on carpet)   

400

Equal pushes or pulls acting in opposite directions that do not change an object's motion.

  • A.Inertia Vectors
  • B.Collision Forces
  • C.Balanced Forces
  • D.Unbalanced Forces
  • C.

    Balanced Forces

400

If a wooden box is speeding up as it is pushed across a floor to the right, which force arrow must be longer in a free-body diagram?

  • A.The Push Force arrow pointing right
  • B.Both arrows must be exactly equal in length.
  • C.The Friction Force arrow pointing left
  • D.The downward Gravity arrow
  • A.The Push Force arrow pointing right
400

Why does a heavy truck change speed much less than a small car when hit with the same force?

  • A) It has less mass, so it needs less force   

  • B) It has more mass, which means it needs more force to change its motion   

  • C) Gravity pulls harder on small cars

  • D) Friction stops small cars instantly

  • B) It has more mass, which means it needs more force to change its motion   

400

What is the predicted speed change for a 6 kg cart pushed with the same force as a 3 kg cart that changes 2 m/s? 

  • A) +4 m/s   

  • B) +12 m/s

  • C) +1m/s

  • D) 0 m/s

  • C) +1m/s

400

What do we call a variable that is kept the same on purpose during a scientific experiment?   

  • A) Independent variable   

  • B) Dependent variable   

  • C) Controlled variable (constant)   

  • D) Random variable 

  • C) Controlled variable (constant)   

500

The contact event when two objects crash into each other and generate equal and opposite reaction forces.

  • A.Collision
  • B.Friction Event
  • C.Net Acceleration
  • D.Balanced Equilibrium
  • A.

    Collision

500

A 3 kg cart experiences a speed change of +2 m/s when given a standard push. What speed change would a 1 kg cart experience with the exact same push?

  • A.+18 m/s
  • B.+6 m/s
  • C.+0.67 m/s
  • D.+2 m/s
  • B.+6 m/s
500

Maya rolls a heavy 2 kg truck on smooth wood and a light 0.5 kg truck on rough carpet to test friction. Is this a fair test?

  • A.No, because toys cannot be used in physics experiments.
  • B.Yes, because different trucks require different flooring.
  • C.Yes, as long as both trucks finish moving.
  • D.No, because she changed two variables at once (mass and surface type).
  • D.No, because she changed two variables at once (mass and surface type).
500

Newton's Second Law states that acceleration depends on net force and...  

  • A) Friction   

  • B) Volume   

  • C) Mass   

  • D) Temperature 

  • C) Mass   

500

Describe one design change you could make to bumper cars to protect drivers, using physics concepts.   

  • A) Remove all padding to make them faster   

  • B) Add thick rubber/foam bumpers to extend collision time and reduce peak impact force   

  • C) Make them heavier so they never move   

  • D) Eliminate seatbelts 

  • B) Add thick rubber/foam bumpers to extend collision time and reduce peak impact force   

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