This one has had me stumped for a few days now. Hope someone can help shed some light on this question.

For a body travelling with constant acceleration of1)meters/second^2 its velocityam/sec afterVseconds is given bytwhereV=u+atis its initial velocity.u

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