Work Energy And Power Question 52
Question: Tripling the speed of the motor car multiplies the distance needed for stopping it by [NCERT 1978]
Options:
A) 3
B) 6
C) 9
D) Some other number
Show Answer
Answer:
Correct Answer: C
Solution:
$ s\propto u^{2} $ i.e. if speed becomes three times then distance needed for stopping will be nine times.
