Level 1
In a game of tug-of-war, the team pulling with greater force wins. This demonstrates:
a) Balanced forces
b) Unbalanced forces
c) Newton’s Third Law
d) Inertia
Answer: b) Unbalanced forces
Which of these best demonstrates the Law of Conservation of Momentum?
a) A skater pushing off a wall and rolling backward
b) A ball slowing down due to friction
c) A car increasing speed on a highway
d) A plane taking off
Answer: a) A skater pushing off a wall and rolling backward
Which of these increases momentum?
a) Decreasing velocity
b) Increasing mass
c) Applying a balanced force
d) Applying no force
Answer: b) Increasing mass
What happens to an object’s momentum if its mass doubles but its velocity stays the same?
a) It stays the same
b) It is cut in half
c) It doubles
d) It quadruples
Answer: c) It doubles
A roller coaster speeds up as it goes down a hill and slows as it climbs the next hill. Which of Newton’s Laws best explains this motion?
a) Newton’s First Law
b) Newton’s Second Law
c) Newton’s Third Law
d) The Law of Conservation of Momentum
Answer: b) Newton’s Second Law
What force acts in the opposite direction of motion and slows objects down?
a) Gravity
b) Friction
c) Centripetal force
d) Net force
Answer: b) Friction
What happens when a moving object collides with another object of equal mass at rest?
a) The moving object stops, and the other starts moving
b) Both objects stop
c) Both objects move in the same direction
d) The moving object speeds up
Answer: a) The moving object stops, and the other starts moving
What is the net force on an object if two people push it in opposite directions with equal force?
a) Zero
b) The sum of both forces
c) The difference between the forces
d) The direction of the stronger force
Answer: a) Zero
A ball rolls down a ramp. Which force primarily causes the ball to accelerate?
a) Friction
b) Gravity
c) Inertia
d) Centripetal force
Answer: b) Gravity
A student pushes a book across a table. What type of force causes the book to slow down?
a) Inertia
b) Friction
c) Momentum
d) Acceleration
Answer: b) Friction
Which of Newton’s Laws explains why a ball will eventually stop rolling?
a) First Law
b) Second Law
c) Third Law
d) Conservation of Momentum
Answer: a) First Law
Why do airbags help reduce injuries in car crashes?
a) They stop the motion of the person
b) They change the momentum gradually, reducing force
c) They eliminate inertia
d) They provide an unbalanced force
Answer: b) They change the momentum gradually, reducing force
Which situation demonstrates Newton’s Second Law of Motion?
a) A baseball accelerating when hit by a bat
b) A book staying at rest on a table
c) A rocket launching due to fuel combustion
d) A car stopping suddenly
Answer: a) A baseball accelerating when hit by a bat
Which of the following is an example of an unbalanced force?
a) A book sitting on a table
b) A car accelerating when the gas pedal is pressed
c) A person standing still
d) A bird flying at a constant speed
Answer: b) A car accelerating when the gas pedal is pressed
Which of the following describes balanced forces?
a) A net force that causes an object to accelerate
b) Equal forces acting in opposite directions, resulting in no motion
c) A force applied to an object that causes a change in velocity
d) A force pair acting in the same direction
Answer: b) Equal forces acting in opposite directions, resulting in no motion
Why do heavier objects require more force to accelerate than lighter objects?
a) They have more inertia
b) They experience less air resistance
c) They move faster
d) They have less momentum
Answer: a) They have more inertia
What force keeps the moon in orbit around the Earth?
a) Magnetism
b) Gravity
c) Friction
d) Centripetal force
Answer: d) Centripetal force
A person jumps off a boat onto a dock, and the boat moves backward. Which law explains this?
a) Newton’s First Law
b) Newton’s Second Law
c) Newton’s Third Law
d) Law of Conservation of Momentum
Answer: c) Newton’s Third Law
A tennis player hits a ball with a racket. Which of the following describes the force that the ball exerts on the racket?
a) Unbalanced force
b) Reference direction
c) Force pair
d) Circular motion
Answer: c) Force pair
A car suddenly stops, and the passengers continue moving forward until their seatbelts stop them. This is an example of:
a) Newton’s Third Law
b) Newton’s Second Law
c) Newton’s First Law
d) The Law of Conservation of Momentum
Answer: c) Newton’s First Law
A satellite orbits Earth because of:
a) Balanced forces
b) Centripetal force
c) Magnetism
d) Air resistance
Answer: b) Centripetal force
Why do passengers move forward in a car when the brakes are applied suddenly?
a) Balanced forces
b) Unbalanced forces
c) Inertia
d) Momentum
Answer: c) Inertia
What is required for an object to change its motion?
a) A balanced force
b) An unbalanced force
c) No force at all
d) Gravity
Answer: b) An unbalanced force
Why does a rocket move upward when launched?
a) Air pushes the rocket upward
b) The force from burning fuel pushes down, creating an equal and opposite reaction upward
c) The rocket gains momentum as it rises
d) Gravity repels the rocket
Answer: b) The force from burning fuel pushes down, creating an equal and opposite reaction upward
A soccer ball is sitting on the ground until a player kicks it. Which of Newton’s Laws explains why the ball does not move until it is kicked?
a) Newton’s First Law
b) Newton’s Second Law
c) Newton’s Third Law
d) The Law of Conservation of Momentum
Answer: a) Newton’s First Law