During upward projection the final velocity is zero, and the gravitational acceleration is -10 m/s² (against the gravity).
Therefore; using the equation;
S = 1/2gt² + ut
Where s is the height h, g is gravitational acceleration, and t is the time and u is the initial velocity u, is 16 ft/s.
Thus; h= 1/2(-10)t² + 16t
We get; h = -5t² + 16t
Therefore; the quadratic equation is 5t² - 16t + h =0
Answer:
m uncertainty percentage :
+- 2.5
+- 7.5
+- 12 5
+- 17.5
+- 25
+- 30
M uncertainty percentage = 16.5
m + M uncertainty percentage;
+- 19
+- 24
+- 29
+-34
+- 41.5
+- 46.5
ex 50 × 5 ÷100 = 2.5
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