Newton Law 1 Flashcards
(20 cards)
What is Newton’s First Law of Motion also known as?
The Law of Inertia.
True or False: An object at rest will remain at rest unless acted upon by an external force.
True.
Fill in the blank: An object in motion will continue in motion with the same _____ unless acted upon by an external force.
velocity.
What does Newton’s First Law imply about the state of motion of an object?
It implies that an object will maintain its state of motion unless a net external force acts on it.
Which concept does Newton’s First Law primarily explain?
Inertia.
Multiple Choice: Which of the following scenarios illustrates Newton’s First Law? A) A car accelerates when the driver presses the gas pedal. B) A ball rolls down a hill. C) A book remains on a table until someone pushes it. D) A person jumps off a diving board.
C) A book remains on a table until someone pushes it.
What is required for an object to change its state of motion according to Newton’s First Law?
A net external force.
True or False: The greater the mass of an object, the less inertia it has.
False.
What is the relationship between mass and inertia as described by Newton’s First Law?
Inertia is directly proportional to mass; greater mass means greater inertia.
Short Answer: How does Newton’s First Law apply to everyday life?
It explains why passengers lurch forward in a car when it suddenly stops.
What happens to an object in space according to Newton’s First Law?
It will continue moving in a straight line at constant speed unless acted upon by an external force.
Multiple Choice: Which of the following is NOT an example of Newton’s First Law? A) A hockey puck sliding on ice. B) A car making a turn. C) A satellite orbiting Earth. D) A ball thrown in the air.
B) A car making a turn.
Fill in the blank: An object will not change its motion unless acted upon by a _____ force.
net external.
True or False: Newton’s First Law applies only to objects at rest.
False.
What is inertia?
The tendency of an object to resist changes in its state of motion.
Fill in the blank: The concept that explains why a seatbelt is important is _____ Law.
Newton’s First.
Short Answer: Can you give an example of an object in motion that demonstrates Newton’s First Law?
A skateboard rolling on a flat surface without friction.
What is the implication of Newton’s First Law for objects in a vacuum?
They will continue to move indefinitely at a constant velocity.
Multiple Choice: Which physical quantity is not directly related to Newton’s First Law? A) Force. B) Mass. C) Speed. D) Acceleration.
D) Acceleration.
True or False: Newton’s First Law states that forces are necessary to keep an object in motion.
False.
