Question

Study the graphs given below and choose the CORRECT OPTIONS (MORE THAN ONE OPTION MAY BE CORRECT]

1)The speed in constant in first graph
2)The body has uniform retardation in second graph
3)The body is at rest in the third graph
4)The body has uniform speed in the fourth graph
5)The body has uniform acceleration in fourth graph
6)The body has zero acceleration in the first graph
7)The body has non uniform motion in the third graph​

Answer 1

Answer:

(i) OA represents uniform acceleration

(ii) AB represents constant speed.

(iii) BC represents uniform retardation.

(iv) Acceleration of car from O to A= slope of line OA

a=

10−0

40−0

=4m/s

2

(v) Acceleration of car from A to B is zero as it has uniform speed during this time.

(vi) Retardation of car from B to C= slope of line BC

a=

50−30

0−40

=

20

−40

=−2m/s

2