Question

a body of mass 3 kg uniformly charged from 40 metre per second to 10 metre per second in 10 seconds find the retarding force​

Answer 1

CHEERS!!!!

Explanation:

Firstly, you need know these formulae:

ACCELERATION=( FINAL VELOCITY-FINAL VELOCITY) / TIME

FORCE=MASS×ACCELERATION

GIVEN:

mass=3kg

Initial velocity =40 m/s

Final velocity =10m/s

Time=10sec

Acceleration=10-40/10= -3m/s^2

Force= 3×-3= -9 Newtons

We call a force as a retarding force when there is a negative sign.

HENCE, RETARDING FORCE=9 Newtons

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