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AP Intermediate 1st Year Laws of Motion — practice questions — page 2

Explore 87 free Laws of Motion questions in AP Intermediate 1st Year Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Laws of Motion questions and exercises with answers

Showing questions 31–60 of 87.

As per your syllabus, the second law F = m a is valid in which kind of reference frame?Read the answer and worked solution →As per your syllabus, for a body of constant mass, the second law reduces to which form?Read the answer and worked solution →As per your syllabus, the impulse-momentum theorem states that the impulse on a body equals which quantity?Read the answer and worked solution →As per your syllabus, the dimensions of IMPULSE are the same as those of which quantity?Read the answer and worked solution →As per your syllabus, the SI unit of IMPULSE is which?Read the answer and worked solution →As per your syllabus, the total momentum of an ISOLATED system (no external force) is which?Read the answer and worked solution →As per your syllabus, conservation of momentum applies in which kind of collisions between two bodies?Read the answer and worked solution →As per your syllabus, in a recoil scenario (a bullet of mass m fired at v from a rifle of mass M, initially at rest), the rifle recoils at which velocity?Read the answer and worked solution →As per your syllabus, when a billiard ball strikes the wall normally at speed u and reflects at speed u, the impulse on the ball is which?Read the answer and worked solution →As per your syllabus, when you push a wall, the wall pushes back with which force?Read the answer and worked solution →As per your syllabus, the necessary condition for a particle to be in EQUILIBRIUM is which?Read the answer and worked solution →As per your syllabus, the SI unit of force from Newton's second law is which?Read the answer and worked solution →As per your syllabus, which statement about the labels is true?Read the answer and worked solution →As per your syllabus, the maximum STATIC friction force on a block on a horizontal surface obeys which inequality?Read the answer and worked solution →As per your syllabus, KINETIC (sliding) friction is approximately given by which relation?Read the answer and worked solution →As per your syllabus, the coefficients of static and kinetic friction satisfy which order?Read the answer and worked solution →As per your syllabus, the MAXIMUM acceleration of a train such that a box on its floor (μ_s = 0.15) remains stationary is which?Read the answer and worked solution →As per your syllabus, if a mass just starts to slide at angle θ = 15°, the coefficient of static friction is which?Read the answer and worked solution →As per your syllabus, among rolling, sliding (kinetic), and static friction, which is typically LOWEST?Read the answer and worked solution →As per your syllabus, eqn 4.16, the CENTRIPETAL force needed for a body of mass m moving at speed v in a circle of radius R is which?Read the answer and worked solution →As per your syllabus, eqn 4.18, the maximum speed of a car on a LEVEL circular road of radius R is which?Read the answer and worked solution →As per your syllabus, eqn 4.22, the OPTIMUM speed (no friction needed) on a banked road of angle θ is which?Read the answer and worked solution →As per your syllabus, a cyclist taking a R=3 m turn at 18 km/h (μ_s = 0.1) is in which condition?Read the answer and worked solution →As per your syllabus, a R=300 m banked-at-15° racetrack with μ = 0.2 has optimum speed approximately which value?Read the answer and worked solution →For a hanging mass, which condition corresponds to zero acceleration?Read the answer and worked solution →If a net force of $50\,\text{N}$ acts on a combined mass of $20\,\text{kg}$, what is the acceleration?Read the answer and worked solution →A $2\,\text{kg}$ block is accelerated downward at $2\,\text{m s}^{-2}$. Taking $g = 10\,\text{m s}^{-2}$, what is the tension in the string?Read the answer and worked solution →A $2\,\text{kg}$ block hangs vertically by a string and remains at rest. Taking $g = 10\,\text{m s}^{-2}$, what is the tension in the string?Read the answer and worked solution →A $2\,\text{kg}$ block is pulled upward vertically with acceleration $2\,\text{m s}^{-2}$. Taking $g = 10\,\text{m s}^{-2}$, what is the tension in the string?Read the answer and worked solution →A net external force of $30\,\text{N}$ acts on a body of mass $10\,\text{kg}$. What is its acceleration?Read the answer and worked solution →

Worked practice questions

As per your syllabus, the second law F = m a is valid in which kind of reference frame?

  1. Inertial frames only
  2. Any rotating frame
  3. Only frame attached to body
  4. Any accelerating frame
Show answer and solution

Correct answer: A. Inertial frames only

Your syllabus: Newton's laws hold in inertial frames. In non-inertial frames, pseudo-forces must be added.

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As per your syllabus, for a body of constant mass, the second law reduces to which form?

  1. F = m a
  2. F = m / a
  3. F = m × p
  4. F = m × v
Show answer and solution

Correct answer: A. F = m a

Your syllabus: F = d(mv)/dt = m dv/dt = m a (since m is constant).

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As per your syllabus, the impulse-momentum theorem states that the impulse on a body equals which quantity?

  1. Final momentum only
  2. Change in momentum
  3. Initial momentum only
  4. Sum of momenta
Show answer and solution

Correct answer: B. Change in momentum

Your syllabus: ∫F dt = Δp. Impulse equals the change in momentum.

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More Physics topics

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