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qwelly [4]
2 years ago
12

A ball is released from a hot air balloon moving downward with a velocity of

Physics
1 answer:
padilas [110]2 years ago
4 0
The answer is b. 12.1 seconds
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A biker goes up hill with a constant speed of 10km/h. Then he goes downhill with a constant speed of 50km/h. What's his average
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This is not as simple as it looks.  

His average speed is NOT (10km/hr + 50km/hr)/2 = 30 km/hr.

You have to use the definition of speed:

Speed = (total distance covered) / (time to cover the distance).

Let's say the distance up (and down) the hill is 'd' .

Then the time it takes to go up the hill is (d/10) hours.

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4 0
3 years ago
a car with a mass of 2,000 kilograms is moving around a circular curve at a uniform velocity of 25 meters per second. the curve
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Fc=mv^2/r so we get 

2000kg*(25m/s)^2/(80m)= 15625N of force 

hope this helps! Thank You!!

4 0
2 years ago
True or False<br><br> The greater the speed of an object, the less kinetic energy it possesses.
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That is true because if the object is moving at Forceful speeds than it will lose more of its kinetic energy
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