Answer asap giving max points and brainliest A projectile is launched at an angle of 30° and travels a distance of 400 meters. G
ravitational acceleration equals 9.8 m/sec2 calculate the initial velocity.
answer choices:
67
87
57
2 answers:
Answer:

Step-by-step explanation:
Assuming the distance traveled is the horizontal distance.
<u>Horizontal Range Formula</u>

where:
- R = horizontal range
- u = initial velocity
= angle of initial velocity- g = acceleration due to gravity
Given:
- R = 400 m
= 30°- g = 9.8 m/s²
Substituting the given values into the formula and solving for u:







Answer:
<u>67 m/s</u>
Step-by-step explanation:
Formula for range :
- u = initial velocity
- θ = angle of launch
- g = gravitational acceleration
Solving with the given values :
- 400 = u² x sin60° / 9.8
- u² x √3/2 = 3920
- u² = 7840/√3
- u² = 4526.4
- u = <u>67 m/s</u> (approximately)
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