Question

# Tripling the speed of a motor car multiplies the distance needed for stopping it by

A
3
B
6
C
9
D
some other number

Solution

## The correct option is C 9Relation between velocity and distance is$${ V }^{ 2 }={ U }^{ 2 }+2aS$$If the final velocity Zero then the relation is become$$U=\sqrt { 2aS }$$Now if we want to multiply the velocity 3 time then we have to multiply the distance 9 time to make the equation balanced.Physics

Suggest Corrections

0

Similar questions
View More

People also searched for
View More