Motion Test - 4...

Velocity is the (distance or displacement) per unit time.

The unit for the rate of change of velocity is 

The cheetah is the fastest land animal that can attain a maximum speed of $$112~ km/h$$. Express this speed in $$m/s$$.

What distance was covered by the bus at 9.45 a.m.?

Acceleration is defined as 

If a train travelling at $$72$$  km/h is to be brought to rest at a distance of $$200$$ m then its retardation should be :

The rate of change of velocity of an object with respect to time is called ..........

What does the graph represents:

A particle moving rectilinearly with constant acceleration is having initial velocity of 10 m/s. After some time, its velocity becomes 30 m/s. Find out velocity of the particle at the mid point of its path? 

A person walks along an east-west street and a graph of his displacement from home is shown in figure. His average velocity  for the whole time interval is