Arunner starts from rest and has an acceleration of 3 m/s2. how fast is she running after 1.1 seconds

ans) a= (v-u)/t

      3=  (v-0)/1.1

      (3*1.1)+0 = v

      3.3= V

answer; /// the above statement is (true);

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.