Question
Asked May 20, 2019
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Assume that an MX missile goes from rest to a suborbital velocity of 3.50 km/s in 60.0 s (the actual speed and time are classified).

What is its average acceleration in m/s2

What is its average acceleration in multiples of g?

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Expert Answer

Step 1

Given that the missile starts its motion from rest, so that the initial velocity is zero. The final velocity is 3.50km/s, and the time taken to change the velocity is 60.0s. The average acceleration is defined as the change in velocity of a moving object divided by the time elapsed for the velocity change. The average acceleration can be mathematically expressed as follows.

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Step 2

Substitute 3.50km/s for vf, 0km/s for vi, and 60.0s for Δt in the above expression to find the average acceleration of the missile.

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Step 3

Since the acceleration due to gravity g=9.80m/s2, the obtained value of average accel...

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Physics

Kinematics

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