Class VIII

The strength of force is expressed by?
  1. weight
  2. mass
  3. magnitude
  4. longitudinal force
A charged balloon attaches to a wall because of _ 
  1. Muscular force 
  2. Electrostatic force 
  3. Magnetic force 
  4. Gravitational force 
Force acts on an object may change
  1. direction
  2. shape
  3. speed
  4. all of the above
The unit of force is _______
  1. Newton
  2. Dyne
  3. kg. weight
  4. All of these
Force acts on an object may change
  1. direction
  2. shape
  3. speed
  4. all of the above
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