2main ideas about the direction of acceleration

In a vernier instrument the main scale is in 1/2 mm divisions .vernier is made by redividing 19 such divisions into 20 equal parts. calculate the least count of the instrument.

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative

The cerebellum controls? thirst sensations sleep-wake cycles hand-eye coordination heart rate and pulse