NEET-UG and JEE Main Physics · Class 11
Force, inertia and Newton's first law — NEET & JEE Questions
Force, inertia and Newton's first law is a topic in Laws of Motion, a Class 11 Physics chapter of the NEET-UG and JEE Main syllabus. TestBudy holds 12 published NEET-UG and JEE Main questions on Force, inertia and Newton's first law, each with the marking scheme of the real paper.
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Force, inertia and Newton's first law MCQs with solutions
10 of the 12 published questions on this topic, exactly as they appear in a test. Answers and worked solutions come with your result rather than on this page.
Newton's first law states that a body remains at rest or in uniform straight-line motion unless acted upon by
- A. a net external force
- B. gravity only
- C. an internal force only
- D. a constant speed
Inertia is the tendency of a body to
- A. oppose any change in its state of motion
- B. always remain at rest
- C. increase its speed spontaneously
- D. move only in circles
Which quantity is a measure of inertia in translational motion?
- A. Mass
- B. Velocity
- C. Acceleration
- D. Force
If the net external force on a moving body is zero, the body
- A. must come to rest
- B. continues with constant velocity
- C. must accelerate uniformly
- D. must move in a circle
A passenger in a bus tends to fall backward when the bus suddenly starts moving forward. This is mainly due to
- A. inertia of rest
- B. inertia of motion
- C. centripetal force
- D. action-reaction
When a moving bus stops suddenly, passengers tend to move forward because of
- A. inertia of motion
- B. inertia of rest
- C. loss of mass
- D. absence of gravity
A book rests on a horizontal table. The net force on the book is zero because
- A. no forces act on it
- B. its weight is balanced by the normal force
- C. its mass is zero
- D. gravity is absent
A hockey puck slides on nearly frictionless ice after being struck. Once the stick no longer touches it, the puck continues moving mainly because
- A. a forward force remains stored in it
- B. its inertia keeps its velocity nearly constant in the absence of significant net force
- C. gravity pushes it horizontally
- D. its mass becomes zero
A car moves east at constant speed on a level road. Which statement about the net force on the car is correct?
- A. It must point east
- B. It must point west
- C. It is zero
- D. It equals the car's weight
A coin lies on a card placed over a glass. The card is flicked rapidly sideways and the coin falls into the glass. The best explanation is that
- A. the coin tends to remain at rest because of inertia while the card moves away
- B. the coin follows the card because of inertia
- C. the card exerts an upward impulse that launches the coin
- D. gravity stops acting during the flick
Common mistakes in Force, inertia and Newton's first law
Recorded against questions in this topic that are not shown above, so none of these points at an answer you can see on this page.
- Assumes both have equal inertia because both are initially at rest.
- Interprets zero acceleration as meaning every individual force must be zero.
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