Physics
An athlete runs before long jump to get advantage on

Inertia of motion
Moment of a force
Principle of moments
Frictional force

ANSWER DOWNLOAD EXAMIANS APP

Physics
The wall of a dam is broader at the base

To withstand pressure that increases with depth
To withstand pressure that is increased with atmospheric pressure
To withstand pressure that increases in a horizontal plane
Because streamlining is required

ANSWER DOWNLOAD EXAMIANS APP