Physics
When the speed of car is doubled, then what will be the braking force of the car to stop it in the same distance ?

Two times
Half
One-fourth
Four times

ANSWER DOWNLOAD EXAMIANS APP

Physics
It is easier to roll a stone up a sloping road than to lift it vertical upwards because

Work done in rolling a stone is less than in lifting it.
Work done in both is same but the rate of doing work is less in rolling.
Work done in lifting the stone is equal to rolling it.
Work done in rolling is more than in lifting.

ANSWER DOWNLOAD EXAMIANS APP