8 practice sets · Page 1 of 1
If the force acting on an object is doubled, what happens to its acceleration?
It is halved
It is quadrupled
It remains the same
It is doubled
Correct Answer: D — It is doubled
Explanation:
Acceleration is directly proportional to force.
Which is an example of inertia in daily life?
A stone falling from a height
A passenger moving forward when the bus suddenly stops
A car skidding on a wet road
A bus moving faster on a smooth road
Correct Answer: B — A passenger moving forward when the bus suddenly stops
Explanation:
The passenger continues moving forward due to inertia.
Which law of motion is associated with the concept of action and reaction forces?
Newton's Third Law
Newton's First Law
Newton's Second Law
Newton's Law of Gravitation
Correct Answer: A — Newton's Third Law
Explanation:
Newton's Third Law states that every action has an equal and opposite reaction.
What is the first law of motion also known as?
Law of inertia
Law of interaction
Law of force
Law of acceleration
Correct Answer: A — Law of inertia
Explanation:
Newton's First Law is called the Law of Inertia.
What does Newton's Second Law of Motion state?
An object will remain at rest or in uniform motion unless acted upon by an external force
Every action has an equal and opposite reaction
Force is equal to mass times acceleration
Force is inversely proportional to mass
Correct Answer: C — Force is equal to mass times acceleration
Explanation:
Newton's Second Law states that F = ma.
Which of the following is an example of an action and reaction pair according to Newton's Third Law of Motion?
A person pushing a wall
A ball falling to the ground
A car accelerating
A rocket lifting off
Correct Answer: A — A person pushing a wall
Explanation:
When a person pushes a wall, the wall pushes back with an equal and opposite force.
Which law explains why a person feels pushed back when a car suddenly accelerates?
Newton's Third Law
Newton's First Law
Newton's Second Law
Law of Universal Gravitation
Correct Answer: B — Newton's First Law
Explanation:
Newton's First Law explains inertia, which causes the body to resist changes in motion.
Which law explains the relationship between force and motion?
Newton's First Law
Law of Universal Gravitation
Newton's Third Law
Newton's Second Law
Correct Answer: D — Newton's Second Law
Explanation:
Newton's Second Law relates force, mass, and acceleration through F = ma.
