2 years ago

What units would be used to describe the surface gravity of Mars?

Physics

1 answer:

Tom [10]2 years ago

8 0

AU- astronautical units

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Which term refers to a group or community that forms the focal point of study and consists of all the people considered for eval

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The mass of the Sun is 2 × 1030 kg, the mass of the Earth is 6 × 1024 kg, and their center-to-center distance is 1.5 × 1011 m. S

choli [55]

Answer:

0.00461031264 m/s

Explanation:

G = Gravitational constant = 6.67 × 10⁻¹¹ m³/kgs²

M = Mass of the Earth = 6 × 10²⁴ kg

r = Distance between Earth and Sun = $1.5\times 10^{11}\ m$

t = Time taken = 3 days

Acceleration is given by

$a=\dfrac{GM}{r^2}\\\Rightarrow a=\dfrac{6.67\times 10^{-11}\times 6\times 10^{24}}{(1.5\times 10^{11})^2}\\\Rightarrow a=1.77867\times 10^{-8}\ m/s^2$

Velocity of the star

$v=u+at\\\Rightarrow v=0+1.77867\times 10^{-8}\times 3\times 24\times 60\times 60\\\Rightarrow v=0.00461031264\ m/s$

The Sun's speed will be 0.00461031264 m/s

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2 years ago

A wheel of radius 0.23 m, which is moving initially at 25.0 m/s, rolls to a stop in 246.0 m. The wheel's rotational inertia is 0

Digiron [165]

Answer: -1.27 m/s^2

Explanation:

a = - V^2 / 2x

a = -(25^2) / 2 x (246) = 1.27 m/ s^2

Therefore the linear acceleration of the wheel is - 1.27 m/s^2

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For any object in motion, distance is always _________ displacement

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Answer:

for any object in motion , distance is always greater than displacement

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