Mass is measured by a

  • beam balance
  • screw gauge
  • physical balance
  • Vernier calipers

A body continues its state of rest or of uniform motion in a straight line provided no net force acts on it, this statement is called

  • newton's 2nd law of motion
  • newton's 1st law of motion
  • newton's 3rd law of motion
  • law of momentum

The friction offers by a slippery ground is

  • very high
  • very little
  • very difficult
  • circular

In dryer, the water is pushed out of wet clothes due to

  • abundance of centripetal force
  • lack of centripetal force
  • friction
  • retarding force

The force that opposes the motion of moving objects is called

  • friction
  • velocity
  • inertia
  • position

If a bus takes a sharp turn then passengers inside move outward due to

  • force
  • inertia
  • normal force
  • friction

Newton is denoted by

  • n
  • N
  • w
  • R

The force which produces acceleration in the body is equal to the rate of change of

  • velocity
  • acceleration
  • density
  • momentum

The quantity of matter possessed by the body is known as

  • mass
  • weight
  • inertia
  • force

If the coefficient of friction between wood and marble is 0.6,mass of wood is 6 kg, then the force of friction between the wood and the horizontal marble floor will be

  • 36 N
  • 30 N
  • 40 N
  • 23 N

The tires roll over easily on

  • smooth surface
  • rough surface
  • on coal tar
  • all of above

According to newton's 2nd law of motion, with mass ‘m’, velocity ‘v’ and radius ‘r’ the centripetal force is equal to

  • mv² ×r
  • (mv²) ⁄ r
  • mv² + r
  • mv² - r

The direction of centripetal force is always

  • towards center
  • away from center
  • tangent to the circle
  • normal to the circle

The momentum of an isolated system of two or more than two interacting bodies remains

  • variable
  • zero
  • negative
  • constant

The centripetal force is given by

  • (mV2) ⁄ r
  • r ⁄ mv
  • mvr
  • Vr

The friction is reduced by

  • making sliding surfaces smooth
  • lubricating the surface
  • using ball bearings
  • all of above

The maximum value of friction is known as the

  • initial friction
  • force of limiting friction
  • fixed friction
  • inertia

The contact points between the two surfaces form a sort of

  • cold welds
  • hot welds
  • strips
  • momentum

(mass of a body × gravity) is equal to

  • weight
  • inertia
  • force
  • momentum

The constant of friction is represented by

  • ω
  • δ
  • σ
  • μ
0 h : 0 m : 1 s

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