Question

the speed time geaph is
shown in fig is it possible?
why?
T
speed
1​

Answer 1

Explanation: (a) .

• The total number of divisions on horizontal axis for 2 s is 5.

• The total number of divisions on vertical axis for 2 m/s is 3.
• The total displacement of the car during these two seconds will be given as the area under all these squares.
• The area under the (3×5) squares is given as:
• A 15 = 2 x 2 = 4
• So, the area under one small square is : A 1 = 4/15
• Now, the area under the graph for 4 sec is:
• the number of squares under the graph is  n=57 small squares + 6 half small squares
• o, total number of squares =60.
• So, the distance traveled by the car is the area under the curve.  S=60×  4/15
• S=16 m
• (b)

The car moves under the uniform motion after the instant t=6 s because after this instant, the speed of the car becomes constant.

I HOPE THAT THIS WILL HELP YOU VERY WELL....