**For a body travelling with constant acceleration of**

__1)__*meters/second^2 its velocity*

**a****m/sec after**

*V**seconds is given by*

**t****where**

*V=u+at**is its initial velocity.*

**u**After six seconds the body had a velocity of 30 metres per second. 10 seconds later its velocity

*was 70m/sec.*

**V**Form a pair of simultaneous equations and solve them to find:

a) the acceleration

b) the intial velocity

c) the velocity after 20 seconds