What can you say about the motion of an object whose distance time graph is
$(i)$ a straight line, parallel to the time axis ?
$(ii)$ a straight line passing through the origin making an angle with the time axis ?
$(a)$ When will you say a body is in
$(i)$ uniform motion $(ii)$ non$-$uniform motion ?
$(b)$ Show the path of an object when it is in uniform motion with the help of a graph.
What is the relationship between the distance travelled and the time elapsed for motion with uniform velocity ?
Why is the motion of an athlete moving along the circular path an accelerated motion ?
The average time taken by a normal person to react to an emergency is one$-$fifteenth of a second and is called the 'reaction time'. If a bus is moving with a velocity of $60\, km h^{-1}$ and its driver sees a child running across the road, how much distance would. the bus had moved before he could press the brakes ? The reaction time of the people increases when they are intoxicated. How much distance had the bus moved if the reaction time of the driver were $\frac{1}{2}\, s$ under the influence of alcohol ?