Question

please solve this question I have exam today iit. MPC​

Answer 1

Correct option is c)60s

Solution:

S=ut=½ at²

S=½(10) (30)²=4500m

v²=u²=2as

v=300 m/s

Now after fuel is consumed:

a= -10

v=0

v=u-gt

t=30s

Total Time= 30+30=60s