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solong [7]
3 years ago
14

The force of gravity considers which two parts?

Physics
1 answer:
attashe74 [19]3 years ago
3 0
Mass of object/source
Gravity
Fg=mg
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A snowboarder starts from rest at the top of a slope. They accelerate to 35 m/s over 9 seconds. What is their acceleration?
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How is friction reduced between an air hockey puck and the table.
iren2701 [21]

Answer:

An air hockey table has a very smooth and slippery surface which reduces friction by suspending the puck on cushion of air, so that this its motion is much less altered by friction, causing it to glide in a straight line at relatively constant velocity across the table.

Explanation:

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Difference betwwen Acclerat<br>ion and retradation​
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3 years ago
PLEASE HELP MEE THIS IS DUE IN 45 MINS
guajiro [1.7K]

Answer:

The distance travelled does not depend on the mass of the vehicle. Therefore, s = d

Explanation:

This deceleration situation can be analyzed by means of Work-Energy Theorem, where change in translational kinetic energy is equal to the work done by friction:

\frac{1}{2}\cdot m\cdot v^{2}-\mu\cdot m\cdot g \cdot s = 0 (1)

Where:

m - Mass of the car, in kilogram.

v - Initial velocity, in meters per second.

\mu - Coefficient of friction, no unit.

s - Travelled distance, in meters.

Then we derive an expression for the distance travelled by the vehicle:

\frac{1}{2}\cdot v^{2} = \mu \cdot g \cdot s

s = \frac{v^{2}}{\mu\cdot g}

As we notice, the distance travelled does not depend on the mass of the vehicle. Therefore, s = d

3 0
3 years ago
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