Newton Law 2 Flashcards
(25 cards)
What is Newton’s second law of motion?
The law states that the force acting on an object is equal to the mass of that object multiplied by its acceleration (F = ma).
True or False: According to Newton’s second law, an object will accelerate in the direction of the net force acting on it.
True
Fill in the blank: The formula for Newton’s second law is ___ = mass × acceleration.
Force
If a 10 kg object experiences a force of 20 N, what is its acceleration?
2 m/s²
What does the ‘m’ in the formula F = ma represent?
Mass of the object.
What does the ‘a’ in the formula F = ma represent?
Acceleration of the object.
Multiple choice: What unit is force measured in?
Newton (N)
True or False: Increasing the mass of an object while keeping the force constant will decrease its acceleration.
True
What is the relationship between force, mass, and acceleration according to Newton’s second law?
Force is directly proportional to acceleration and mass.
If an object has a mass of 5 kg and accelerates at 3 m/s², what is the force applied to it?
15 N
Fill in the blank: In the absence of net force, an object at rest will remain at rest, and an object in motion will continue in motion at a constant ___ and in a straight line.
Velocity
What happens to the acceleration of an object if the net force acting on it is zero?
The acceleration is zero.
Multiple choice: Which of the following best describes inertia?
The tendency of an object to resist changes in its state of motion.
True or False: Newton’s second law applies only to objects in motion.
False
What is the net force acting on an object if the forces acting on it are balanced?
Zero.
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
What is the effect of doubling the mass of an object while applying the same force?
The acceleration will be halved.
Multiple choice: Which of the following scenarios illustrates Newton’s second law?
A heavier object requires more force to achieve the same acceleration as a lighter object.
True or False: Newton’s second law can be applied in both linear and rotational motion.
True
What is the acceleration of a 12 kg object subjected to a net force of 36 N?
3 m/s²
Fill in the blank: The acceleration produced by a force is ___ to the magnitude of the force and ___ to the mass of the object.
Proportional; inversely proportional
What is the implication of Newton’s second law in terms of safety in vehicles?
Increased mass requires greater force to stop, impacting safety in crashes.
Multiple choice: Which factor does NOT affect the acceleration of an object according to Newton’s second law?
The object’s color.
True or False: The acceleration of an object is independent of the forces acting on it.
False
