Question

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

Time	0	1	2	3	4	5	6	7
Distance	0	1	8	27	64	125	216	343

The force on the object is:

• A. Decreasing with time
• B. Increasing with time
• C. constant
• D. Data insufficient

Answer 1

Answer: (B)

Increasing with time

There is an unequal change of distance in an equal interval of time. Thus, the given object is having a non-uniform motion.since,velocity of the object increasing with time,the acceleration is increasing.
$F\propto a$
Hence,increasing acceleration indicates force acting on the object also increasing.