Fysik Flashcards
What is Newton’s First Law of Motion?
An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.
True or False: According to Newton’s Second Law, Force equals mass times acceleration.
True
Fill in the blank: Newton’s Third Law states that for every action, there is an equal and opposite __________.
reaction
What is the formula used in Newton’s Second Law?
F = ma (Force equals mass times acceleration)
Multiple Choice: Which law describes inertia?
Newton’s First Law
What is the unit of force in the International System of Units (SI)?
Newton (N)
True or False: An object can experience motion without a net force acting on it.
False
What is the primary concept of Newton’s First Law?
Inertia
Fill in the blank: The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its __________.
mass
Multiple Choice: If a car accelerates from rest to 60 km/h in 5 seconds, what is the average acceleration?
12 km/h²
What happens to the motion of an object if no net force acts on it?
It remains in its current state of motion.
True or False: The mass of an object affects the amount of force required to change its motion.
True
What does the term ‘net force’ refer to?
The total force acting on an object after all the forces are combined.
Fill in the blank: According to Newton’s Third Law, forces always occur in __________.
pairs
Multiple Choice: Which of the following is an example of Newton’s Third Law?
When you push against a wall, the wall pushes back with equal force.
What is the relationship between mass and inertia?
Inertia is directly proportional to mass; greater mass means greater inertia.
True or False: Acceleration is the rate of change of velocity.
True
What is the effect of friction on motion according to Newton’s laws?
Friction opposes motion, affecting the net force acting on an object.
Fill in the blank: A force of 10 N applied to a 2 kg object will produce an acceleration of __________.
5 m/s²
Multiple Choice: An astronaut in space throws a ball. What happens to the ball?
It continues to move in the same direction at a constant speed.
What does Newton’s Second Law imply about the relationship between force, mass, and acceleration?
Increasing the force increases acceleration; increasing mass decreases acceleration for the same force.
True or False: A heavier object requires less force to accelerate than a lighter object.
False
What is the significance of the concept of action-reaction pairs in Newton’s Third Law?
It explains that forces always occur in equal and opposite interactions.
Fill in the blank: The acceleration produced by a net force is __________ proportional to the mass of the object.
inversely
