Question

A physical quantity was measured to be —5m/s state with a reason whether it is speed or velocity

Answer 1

Explanation:

The speed  is constant. Thevelocity  should be, unless particle changes direction. Speed is the magnitude of velocity, a scalar quantity (has size, but not direction), whereasvelocity is a vector, which has both magnitude and direction. c is defined asspeed, which has only magnitude.