Question

Figure shows the graph of speed versus time for a moving truck. What will be the distance travelled by truck car in the last two seconds? .
(A) 60 m
(B) 90 m
(C) 20 m
(D) 40 m

Answer 1

Hey there !

Solution:

In a Velocity - Time Graph, the distance covered is represented by the area covered in the graph between the slope and x - axis.

So Distance covered in last 2 seconds can be calculated by calculating the area of right angle triangle present between 5 and 7.

So Area = 1 / 2 * b * h

Base = 7 - 5 = 2 units

Height = 20

=> Area = 0.5 * 2 * 20

=> Area = 1 * 20 = 20 sq. units

Hence the distance covered is 20 sq. units so it is 20 m.

Therefore Option ( c ) is correct.

Hope my answer helped !

Answer 2

20m

Explanation:

¯\_(ツ)_/¯ IT'S THAT SIMPLE!!! ⟵(๑¯◡¯๑)

Hope It helps(・_・;)