Use the exact values you enter to make later calculations. A bullet is fired fro

Question

Use the exact values you enter to make later calculations. A bullet is fired from a rifle that is held 2.7 m above the ground in a horizontal position. The initial speed of the bullet is 1150 m/s. There is no error in the velocity value. Find the time it takes for the bullet to strike the ground. (Enter your answer to two significant figures.) Find the horizontal distance traveled by the bullet. (Enter your answer to two significant figures.) If the error in time measurements is A t, what will be the equation to calculate error in the horizontal distance (Ax)? (Assume x is in meters and f is in seconds. Do not enter units in your expression. Substitute numeric values; the only variable you should enter is A t. Enter your coefficient to at least four significant figures.)

Explanation / Answer

a) y axis:
in this case d =(1/2)(a)(t^2)
2.7m = (1/2)(9.8m/s^2)(t^2)
t=0.742 seconds to hit ground

b)x axis:
0.742 seconds x 1150 m/s = 853.3 meters on level ground with no air resistance
c) del x = del t * 1150

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