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Finding Gravity's Acceleration?
An astronaut on the planet Zircon tosses a rock horizontally with a speed of 6.90m/s . The rock falls through a vertical distance of 1.50m and lands a horizontal distance of 8.55m from the astronaut.
What is Gravity on this planet?
(-9.81m/s^2 Equivalent)
=/
2 Answers
- billrussell42Lv 79 years agoFavorite Answer
The time in the air is 8.55 m / 6.9 m/s = 1.24 seconds
Use equation of motion for falling rock to get g
h = ½gt²
1.5 = ½g(1.24)²
g = 3/(1.24)² = 1.96 m/s²
- Anonymous9 years ago
use distance divided by speed, to find time in air, then just calculate distance fallen divided by T^2, I think
plug back in the gravity to make sure, but I'm not usually wrong
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