Motion and Force | Free Demo Test

b. Rectilinear motion means motion along a straight line.
c. Perpetual motion is the motion of a hypothetical machine which, of a hypothetical machine which, once activated, would run forever unless subject to an external force
orto wear.
d. Circular motion is a movement of an object along the circumference of a circle or rotation along a circular path .

a and b are same uniform retardation Or
Uniform negative acceleration velocity time graph decreases at constant rate.
C. Average acceleration is the change in velocity divided by an elapsed time.
d. In uniform positive acceleration velocity time graph increases at constant rate.

Shortest distance between two point is called displacement