Question

A Body Travels 200 Cm In First 2 Seconds And 220 Cm In Next 4 Seconds What Will Be The Velocity At The End Of 7Th Second From The Start

Answer 1

200=2u+2

Then at the end 6 second total distance travelled 200+220=420cm

420=6u+18a

U=115cm/sec and a=-15 cm/s/s

V=7second

V=u+at

=115-105=10cm/s