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MrRissso [65]
3 years ago
15

What two quantities must stay the same in order for an object to have a constant velocity? A) The speed and kinetic energy must

be constant. B) The speed and mass of the object must be constant. C) The speed and direction of travel must be constant. D) The force applied to and direction of travel must be constant.
Physics
1 answer:
salantis [7]3 years ago
6 0

The answer is C. The speed and direction  of travel must be constant.


Velocity is a vector. Meaning it is speed in a particular direction. Hope this helps!

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During the deceleration of an ascending elevator, the normal force on the feet of a passenger is _____ her weight. During the de
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Answer: Smaller than ; larger than

Explanation:

When the elevator is moving in the upward direction, then the force acting on it is negative in nature because of

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here ma is negative so the N= mg-ma

Hence, it feels smaller than its original weight.

When the elevator is moving downward , then the force acting will be positive in nature

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here ma will be positive so it feels larger the original weight of passenger.

7 0
2 years ago
Karen has a mass of 51.9 kg as she rides the up escalator at Woodley Park Station of the Washington D.C. Metro. Karen rode a dis
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28852 J

Explanation:

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4 0
3 years ago
A sled of mass m is coasting on the icy surface of a frozen river. While it is passing under a bridge, a package of equal mass m
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mass of Sled is m

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v=\frac{u}{2}

where v is the final velocity

Initial kinetic energy =\frac{1}{2}mu^2

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Final kinetic Energy is half of initial    

5 0
3 years ago
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The change in distance has been given as 100km.

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Hope this helped!

4 0
2 years ago
A net force acting on an object will always cause a change in the object's _________.
Nataly [62]
 cause a change in the object's velocity
3 0
3 years ago
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