1st Law
What does Newton's first law state?
A) Every object exerts an equal and opposite force on another object.
B) An object at rest stays at rest, and an object in motion stays in motion at constant velocity unless acted upon by an unbalanced force.
C) The acceleration of an object is proportional to the net force acting on it.
D) For every action, there is an equal and opposite reaction.
B) An object at rest stays at rest, and an object in motion stays in motion at constant velocity unless acted upon by an unbalanced force.
What does Newton's Second Law of Motion state?
A) The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
B) For every action, there is an equal and opposite reaction.
C) An object at rest stays at rest unless acted upon by an unbalanced force.
D) The force acting on an object is equal to the gravitational pull it experiences.
A) The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
What does Newton's Third Law of Motion state?
A) The acceleration of an object is directly proportional to the net force acting on it.
B) An object at rest stays at rest unless acted upon by an unbalanced force.
C) For every action, there is an equal and opposite reaction.
D) An object in motion stays in motion at a constant velocity unless acted upon by an external force.
C) For every action, there is an equal and opposite reaction.
If a bat hits a baseball with a force of 200 N, what is the force exerted by the baseball on the bat?
A) 0 N
B) 100 N
C) 200 N
D) 400 N
C) 200 N
Which law explains why your balloon car slowed down when there was no more air in the balloon?
Newton's 2nd Law
Which of the following scenarios best illustrates Newton's First Law of Motion?
A) A soccer ball remains still on the field until it is kicked.
B) A basketball bounces higher on a hardwood court than on grass.
C) A rocket accelerates as fuel is burned.
D) Two ice skaters push off each other and move in opposite directions.
A) A soccer ball remains still on the field until it is kicked.
Which equation represents Newton's Second Law of Motion?
A) F=m/a
B) F=m⋅v
C) F=1/m⋅a
D) F=m⋅a
D) F=m⋅a
Why does a swimmer move forward in the water?
A) The swimmer applies force to the water, and the water applies an equal and opposite force on the swimmer.
B) The swimmer reduces water resistance to gain speed.
C) The swimmer's weight pushes them forward.
D) The swimmer’s arms create suction in the water.
A) The swimmer applies force to the water, and the water applies an equal and opposite force on the swimmer.
What happens to an object moving in a vacuum if no external force acts on it?
A) It stops due to lack of air resistance.
B) It accelerates due to zero gravity.
C) It continues moving at a constant velocity.
D) It slows down because of inertia.
C) It continues moving at a constant velocity.
Which law explains why your car changes direction when you turn the wheel?
Newton's 2nd Law
Which of the following is true about inertia?
A) Heavier objects have less inertia than lighter objects.
B) Inertia is dependent on the mass of an object.
C) Inertia causes objects to stop moving.
D) Objects in motion cannot exhibit inertia.
B) Inertia is dependent on the mass of an object.
Which of the following scenarios violates Newton’s Second Law of Motion?
A) A soccer ball accelerates faster than a bowling ball when kicked with the same force.
B) A person pushes harder to move a heavy object compared to a light object.
C) A car accelerates at a constant speed while the net force acting on it is zero.
D) An object at rest remains stationary when no force acts on it.
C) A car accelerates at a constant speed while the net force acting on it is zero.
Why don’t the action and reaction forces cancel each other out?
A) Because the forces act on different objects.
B) Because the action force is stronger than the reaction force.
C) Because gravity overrides the forces.
D) Because the objects move in the same direction.
A) Because the forces act on different objects.
A baseball and a bat collide. The baseball accelerates at 3 m/s^2 and has a mass of 1kg, how fast does the 5kg bat accelerate?
A) 45 m/s^2
B) 8 m/s^2
C) 2 m/s^2
D) 0.6 m/s^2
D) 0.6 m/s^2
Which law explains why the air coming out of the balloon, pushes your car forward?
Newton's 3rd Law
What is inertia?
A) The tendency of an object to change its state of motion.
B) The resistance of an object to changes in its state of motion or rest.
C) The force that keeps objects at rest.
D) The speed of an object in a straight line.
B) The resistance of an object to changes in its state of motion or rest.
A car of mass 1,000 kg accelerates at 2 m/s^2. What is the net force acting on the car?
A) 500 N
B) 1,000 N
C) 2,000 N
D) 4,000 N
C) 2,000 N
When a bird pushes down on the air with its wings, what is the reaction force?
A) The air pushing the bird upward.
B) The bird's wings pushing the air backward.
C) Gravity pulling the bird downward.
D) Friction acting against the bird's motion.
A) The air pushing the bird upward.
When you jump off a small boat onto a dock, the boat moves backward. Why does this happen?
A) The force of gravity pulls the boat back.
B) You pushed the dock backwards.
C) The dock exerts a forward force on the boat.
D) The water resistance pushes the boat backward.
B) You pushed the dock backwards.
Which law explains why your hand hurts when you punch the wall?
Newton's 3rd Law
If no external forces act on a moving object, what will happen to the object?
A) It will gradually slow down.
B) It will stop immediately.
C) It will continue moving at a constant speed in a straight line.
D) It will speed up indefinitely.
C) It will continue moving at a constant speed in a straight line.
If the mass of an object is doubled but the force acting on it remains the same, what happens to the acceleration?
A) It doubles.
B) It is halved.
C) It stays the same.
D) It becomes zero.
B) It is halved
Which of the following is the best example of Newton's Third Law of Motion?
A) A car accelerating because of its engine.
B) A person pushing against a wall, and the wall pushing back with equal force.
C) A book remaining still on a table due to gravity.
D) A soccer ball slowing down as it rolls across the field.
B) A person pushing against a wall, and the wall pushing back with equal force.
In the Modifed Atwood lab, what did the slope of your Forces vs. acceleration graph mean?
A) mass of cart
B) acceleration of cart
C) mass of system
D) initial acceleration of system
C) mass of system
Which law explains why passengers lurch forward when the car suddenly stops?
Newton's 1st law