Question

answer plz..........​

Answer 1

HEYA ❤️

i).ACCELERATION IS THE RATE OF CHANGE OF VELOCITY.

EXPRESSION FOR ACCELERATION IS :

a=(v-u)/t

where, a is acceleration

v is final velocity

u is initial velocity

and t is time.

ii).u= 10m/s

v=30m/s

t= 15 seconds.

according to expression of acceleration,

a=(v-u)/t

a=(30-10)/15

a=20/15

a= (4/3) m/s²



iii). POSITIVE ACCELERATION: WHEN THE VELOCITY INCREASES WITH TIME, CALLED AS POSITIVE ACCELERATION.

NEGATIVE ACCELERATION: WHEN THE VELOCITY DECREASES WITH TIME , CALLED AS NEGATIVE ACCELERATION. IT IS ALSO CALLED RETARDATION.

HOPE IT HELPS ❤️