victoriahuntley12148
29.01.2021 •
Physics
A car is moving at 15.6 m/s. If that car has a kinetic energy equivalent to 243.36 Joules, how heavy is the car.
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Ответ:
The weight is 348.4 N
Explanation:
Effect of the Altitude on the Acceleration of Gravity
The effect of gravity decreases with altitude because greater altitudes mean greater distances from the Earth's center.
The practical formula to calculate the gravity as a function of the altitude h is:
Where go is the conventional gravitational acceleration =
R is the Earth's mean radius at the equator = 6,378 Km
h is the altitude.
At a height of h=800 Km, the acceleration of gravity is:
Calculating:
The weight is the product of the acceleration of gravity by the mass of the object, thus:
The weight is 348.4 N