Question

Vikas bought a new car and wanted to test it on highways. He wanted to find

out the acceleration of his car at different velocities in the first

6 seconds. His friend Shubham sat alongside him and noted down the

different speeds. Shubham plotted the graph given below. Vikas’s son, who

was studying in the 9th class wanted to carry out an experiment with the car.

He had recently learned a peculiar thing about circular motion and he

coerced his father to take the car to a circular track and drive at constant

speed.(i) Find out the car’s acceleration from A to B.

(a) 8.33 m/s2

(b) 3.13 m/s2

(c) 83.3 m/s2

(d) 31.3 m/s2

(ii) What is the maximum velocity attained by the car?

(a) 0 m/s

(b) 25 m/s

(c) 20 m/s

(d) 15 m/s
(iii) Which part of graph shows the velocity of the car decreasing with

time?

(a) AB

(b) BA

(c) BC

(d) AF

(iv) Which peculiar thing had Vikas’s son learned about circular motion

that he wanted to test on the track?

(a) The speed of an object is non-uniform and its velocity is

uniform.

(b) The speed of an object remains the same and its velocity is

uniform.

(c) The speed of an object is non-uniform and its velocity is

non – uniform

(d) The speed of an object remains the same but its velocity is

non – uniform.

(v) The distance covered in the region ABE:

(a) 37.5 m

(b) 12.5 m

(c) 2.25 m

(d) 14.5 m​

Answer 1

Answer:

a)2

B)4

c)3

d)1

e)2

hope my answer is correct