Motion and Force

Motion and Force



1.  When body is in motion, ________ always changes.
A. its velocityB. its acceleration
C. its position vectorD. its momentum


2.  A body is moving with uniform velocity. Its
A. speed changesB. acceleration changes
C. direction of motion changesD. displacement from origin changes


3.  A man is in a car is moving with velocity of 36km/hr. His speed with repect to the car is
A. 10m/sB. 36m/s
C. zeroD. infinite


4.  When velocity time graph is a straight line parallel to time axis then
A. acceleration is constB. acceleration is variable
C. acceleration is zero D. velocity is zero


5.  Area under velocity time graph represent
A. force B. displacement
C. distanceD. acceleration


6.  Slope of velocity time graph is
A. accelerationB. distance
C. forceD. momentum


7.  Instantaneous and average velocities become equal when body
A. has zero accelerationB. has uniform acceleration
C. has variable accelerationD. moves in a circle


8.  Which law of motion is also called law of inertia?
A. 1st lawB. 2nd law
C. 3rd law D. all 1st, 2nd and 3rd laws


9.  Inertia of an object is quantitative measure of its
A. volumeB. density
C. massD. temperature


10.  Newtons laws do not hold good for particles
A. at restB. moving slowly
C. move with high velocityD. move with velocity comparable to velocity of light


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