The following is the distance-time table of an object in motion:

Time in seconds

Distance in metres

0

0

1

1

2

8

3

27

4

64

5

125

6

216

7

343

(a) What conclusion can you draw about the acceleration?
Is it constant, increasing, decreasing, or zero?
(b) What do you infer about the forces acting on the object?

 

(a)

Finding Velocity

Slide2.JPG

From the above table,

we can see that the velocity changes in unequal amount in equal intervals of time.

∴ The acceleration is non-uniform

 

Since the velocity is increasing with time,

We can say that acceleration is increasing

 

So, the acceleration is increasing non-uniformly

 

(b)

We know that

Force = Mass × Acceleration

 

As the acceleration is increasing,

the forces acting on the object also increases.

 

  1. Class 9
  2. Chapter 9 Class 9 - Force and Laws Of Motion

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CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 9 years and a teacher from the past 16 years. He teaches Spoken English, Written English, Grammar and Vocabulary at Englishtan.