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suter [353]
2 years ago
10

A ball flies through the air. Right before it hit the ground, it’s peed is 10 meters/second and it has 500 joules of kinetic ene

rgy. The mass of the ball is ___ kilograms
Physics
1 answer:
irakobra [83]2 years ago
5 0

Answer: 10 kg

Explanation:

Kinetic Energy = 1/2 * M (V square )

M is mass and V is velocity of the ball

500J = 1/2 *M *( 10)*(10)

M = 10 kg

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A.) Suppose the wind blows out from the west (with the air moving east). The pilot should then head her plane to northwest direction to move directly north.

B.) Given that plane flies at a speed of 102 km/h in still air. And the wind blows out from the west (with the air moving east) at a speed of 46 km/h.

The plan resultant speed can be calculated by using pythagorean theorem.

Resultant Speed = Sqrt( 102^2 + 46^2 )

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Substitute the resultant speed and the distance into the formula.

111.89 = 300/time

Time = 300/111.89

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