Question - Solving Physics Problem: Finding Time of Free Fall
Solution:
The image shows two physics problems. We'll solve the second problem, as it is the first complete one seen in the image:"2. A freely falling body starting from rest attains a velocity of 45 m/s. How long has it been falling?"To solve this question, we can use the kinematic equation for uniformly accelerated motion:v = u + atwhere:v = final velocity (45 m/s)u = initial velocity (0 m/s, since it starts from rest)a = acceleration (9.8 m/s², the acceleration due to gravity)t = time (this is what we're solving for)Let's plug in the known values:45 m/s = 0 m/s + (9.8 m/s²) * tNow, solve for t:t = 45 m/s / 9.8 m/s²t ≈ 4.59 secondsSo, the body has been falling for approximately 4.59 seconds.
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