What is the horizontal range for the flight?

Question

A projectile launched at 240 m/s at 30 degree angle. What is the horizontal range for the flight?

a. None of them

b. 2936 m/s

c. 5085 m/s

d. 2542 m/s

Answer 1

Range is v² sin 2θ / g

v = 240 m/s

θ = 30 degrees

g = 9.81 m/s/s

So you can find the range, it's 5084.9 m

So if you weren't careful you would choose c. (as the number is correct)

However --- the range is a distance so must be in metres, and the units of (c) are m/s

So the correct answer here is none of them