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A spy runs from the front to the back of an aircraft carrier at a velocity of 3.5 m/s. if the aircraft carrier is moving forward at 18.0 m/s, how fast does the apy appear to be running when viewed by an observer on a nearby stationary submarine?

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Kalahira
14.5 m/s. 18.0 m/s going in the forward direction MINUS 3.5 m/s as the spy is running in the opposite direction.
onyebuchinnaji

The speed of the spy with respect to a stationary observer is 21.5 m/s.

The given parameters;

  • velocity of the spy, u = 3.5 m/s
  • velocity of the aircraft, v = 18 m/s

Let the backward motion = negative direction

Let the forward motion = positive direction

The relative velocity of the spy with respect to a stationary observer is calculated as;

[tex]V_{r/o} = 18 \ m/s \ - \ (-3.5 \ m/s)\\\\V_{r/o} = 18 \ m/s \ + \ 3.5 \ m/s\\\\V_{r/o} = 21.5 \ m/s[/tex]

Thus, the speed of the spy with respect to a stationary observer is 21.5 m/s.

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