Physics
General
Easy

Question

To locate the position of the particle we need

  1. A frame of reference
  2. direction of the particle
  3. size of the particle
  4. mass of the particle

The correct answer is: A frame of reference

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A branch of physics dealing with motion without considering its causes is known as ....

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As shown in figure a block of mass m is attached with a cart. If the coefficient of static friction between the surface of cart and block is µ than what would be accelcration a of cart to prevent the falling of block ?

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An impulsive force of 100 N acts on a body for 1 sec What is the change in its linear momentum ?

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If f colon R not stretchy rightwards arrow R defined by f left parenthesis x right parenthesis equals fraction numerator e to the power of x squared end exponent minus e to the power of negative x squared end exponent over denominator e to the power of x squared end exponent plus e to the power of negative x squared end exponent end fraction text , then  end text f text  is  end text

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The force acting on a body whose linear momentum changes by 20 kgms-1 in 10sec is

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A cricket ball of mass  150 g. is moving with a velocity of 12m/s and is hit by a bat so that the ball is turned back with a velocity of 20 m/s If duration of contact between the ball and the bat is 0.01sec The impulse of the force is

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Reason : Rolling friction is converted into sliding friction, which is comparatively larger.

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