Newton’s Second Law(MCQs)

Newton’s Second Law MCQs: Master Physics with Practice Questions

  1. Newton’s Second Law of Motion is mathematically expressed as:


A) F = mv
B) F = ma
C) F = m/a
D) F = a/m

Answer: B
  1. In F = ma, “F” represents:


A) Friction
B) Force
C) Flow
D) Field

Answer: B
  1. SI unit of force is:


A) Joule
B) Watt
C) Newton
D) Pascal

Answer: C
  1.  SI unit of mass is:


A) Newton
B) Kilogram
C) Gram
D) Meter

Answer: B
  1. SI unit of acceleration is:


A) m/s
B) m/s²
C) kg/m²
D) N/kg

Answer: B
  1. If net force increases and mass remains constant, acceleration:


A) Decreases
B) Remains constant
C) Increases
D) Becomes zero

Answer: C
  1.  If mass increases and force remains constant, acceleration:


A) Increases
B) Decreases
C) Remains same
D) Becomes infinite

Answer: B
  1. Newton’s Second Law is also written as:


A) F = m/v
B) F = dp/dt
C) F = mv²
D) F = ma²

Answer: B
  1. The quantity that resists acceleration is:


A) Force
B) Velocity
C) Mass
D) Energy

Answer: C
  1. Acceleration always occurs in the direction of:


A) Velocity
B) Displacement
C) Net force
D) Momentum

Answer: C
  1. If net force is zero, acceleration is:


A) Infinite
B) Zero
C) Constant
D) Negative

Answer: B
  1. Newton’s Second Law applies to:


A) Only stationary objects
B) Only moving objects
C) All objects with net force
D) Only planets

Answer: C
  1. A 2 kg object accelerates at 3 m/s². Force is:


A) 5 N
B) 6 N
C) 8 N
D) 10 N

Answer: B
  1. A 10 N force acts on 2 kg mass. Acceleration is:


A) 2 m/s²
B) 5 m/s²
C) 10 m/s²
D) 20 m/s²

Answer: B
  1. Newton’s Second Law is most accurate in:


A) Quantum scale only
B) Relativistic speeds only
C) Classical mechanics
D) Nuclear physics only

Answer: C
  1. Force is a:


A) Scalar quantity
B) Vector quantity
C) Dimensionless quantity
D) Energy form

Answer: B
  1. Mass is a:


A) Vector
B) Scalar
C) Force
D) Acceleration

Answer: B
  1. Which law explains rocket propulsion?


A) Newton’s First Law
B) Newton’s Second Law
C) Newton’s Third Law only
D) Law of gravitation only

Answer: B
  1. If velocity is constant, net force is:


A) Maximum
B) Minimum
C) Zero
D) Infinite

Answer: C
  1. The product ma represents:


A) Energy
B) Momentum
C) Force
D) Work

Answer: C
  1. Which increases acceleration most effectively?


A) Increasing mass
B) Increasing force
C) Decreasing velocity
D) Increasing friction

Answer: B
  1. Newton’s Second Law is valid when:


A) Mass is changing always
B) Force is zero
C) Mass is constant (basic form)
D) Gravity is absent

Answer: C
  1. The law F = ma was published in:


A) 1543
B) 1687
C) 1800
D) 1905

Answer: B
  1. If both force and mass double, acceleration:


A) Doubles
B) Halves
C) Remains same
D) Becomes zero

Answer: C
  1. Newton’s Second Law is mainly used to study:


A) Heat transfer
B) Motion of objects
C) Chemical reactions
D) Light reflection

Answer: B

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