Answer:
The velocity of the block is 3.5 m/s.
(C) is correct option.
Step-by-step explanation:
Given that,
Mass of block = 0.12 kg
Force constant = 330 N/m
Time = 0.7 s
We need to calculate the angular frequency
Using formula of angular frequency

Put the value into the formula


We need to calculate the velocity of the block
Using simple harmonic motion


On differentiating with respect to t


Put the value into the formula


Hence, The velocity of the block is 3.5 m/s.