Answer: 6.9x 107 in standard form is 69,000,000
<span>Which of the following forms of electromagnetic waves is LEAST dangerous to the human body? B
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Explanation:
You are given the initial velocity, the displacement, and the acceleration. You're looking for the final velocity. So you use the equation:
v² = v₀² + 2aΔy
When you solve for v, you take the square root. Your calculator will return a positive answer, but there are actually two possible answers: positive and negative.
v = ±√(v₀² + 2aΔy)
You must use the physical context of the problem. If we take up to be the positive direction, then v must be negative, since the projectile is moving down.
Answer: 5.29 seconds
Explanation:
if the speed is 24 meters per second than it would take you 5.29 seconds or 127meters/24m/s to get 5.29s
