Sent a picture of the solution to the problem (s). You can always break a number down to something you understand.
Answer:
The answer to your question is vo = 19.62 m/s
Step-by-step explanation:
Data
angle = α = 30°
time = t = 2 s
vo = ?
g = 9.81 m/s²
Formula

Solve for vo

Substitution

Simplification


Result
vo = 19.62 m/s
Step-by-step explanation:
at first give expression .
Answer:
2 is a number and "twice a number" means multiply by 2.