Answers

2014-08-07T20:58:43+08:00
V(initial) is 0 m/s since it started from rest. The acceleration due to gravity is - 9.8 m/s^2. A.) To find the Final Velocity: V = (0 m/s) + (-9.8 m/s^2)(1.0 s) = -9.8 m/s (Negative tells the direction, which is downward). To find the position: X = (0 m/s)(1 s) + (1/2)(-9.8 m/s^2)(1 s)^2 = -4.9 m. B.) To find the Final Velocity: V = (0 m/s) + (-9.8 m/s^2)(2.0 s) = -19.6 m/s (Negative tells the direction, which is downward). To find the position: X = (0 m/s)(2 s) + (1/2)(-9.8 m/s^2)(2 s)^2 = -19.6 m. C.) To find the Final Velocity: V = (0 m/s) + (-9.8 m/s^2)(3.0 s) = -29.4 m/s (Negative tells the direction, which is downward). To find the position: X = (0 m/s)(3 s) + (1/2)(-9.8 m/s^2)(3 s)^2 = -44.1 m
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