Please nedd step by step solution! please include free body diagram if possible.

Question

Please nedd step by step solution! please include free body diagram if possible.

1) An airplane flies north at 800 km/h relative to the air. The air that airplane flies through is moving relative to the earth with the wind speed of 140 km/h, directed 30 degrees south of east. What is the airplane velocity as reckoned by an observer on the ground? (velocity can be given in km/h relative to north)

2) An astronaut is on a different planet. She can jump with an initial speed of 5 ms^-1 and she observes that the furthest she can jump over level ground with this speed is a horizontal distance of 10m. What is the acceleration due to gravity on this planet?

Explanation / Answer

      25 = 20a => a = 25/20 = 1.25 m/sec^2

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