Given:
• Mass, m = 0.200 mg
,
• Speed, v = 3.00 x 10³ m/s
,
• Time, t = 6.00 x 10^⁻⁸ s.
Let's calculate the force exerted.
Using the inpulse-momentum theroerm, we have:
impulse = change in momemntum
Where:
Impulse = force x time
change in momentum = mass x velocity.
Thus, we have:

Let's solve for the force F:

Therefore, the force exterted is 10000 N.
ANSWER:'
10000 N