Question

The velocity of a particle at an instant is
10m/s. After 5 sec, the velocity of the
particle is 20m/s. The velocity at 3 seconds
before from the instant when velocity of a
particle is 10m/s
(1) 8 m/s
(2) 4 m/s
(3) 6 m/s
(4) 7 m/s
​

Answer 1

here's your answer(2) 4m/s

Answer 2

Second one 4 m/s

hope it'll help