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Maslowich
3 years ago
9

a 7 kilogram cat is resting on top of a bookshelf that is 2 meters high. what is the cat’s gravitational potential energy relati

ve to the floor? joules
Physics
2 answers:
viva [34]3 years ago
7 0

Answer:

The cat’s gravitational potential energy relative to the floor is 137.2 Joules.

Explanation:

Given that,

Mass of cat = 7 kg

Height of bookshelf = 2 m

The gravitational potential energy :

The gravitational potential energy is the product of the mass of the object, gravity and height of the object from the ground.

The gravitational potential energy relative to the floor is

P.E = mgh-0

P.E = 7\times9.8\times2-0

P.E=137.2\ J

Hence, The cat’s gravitational potential energy relative to the floor is 137.2 Joules.

attashe74 [19]3 years ago
5 0
PE = mgh
      Mass, m = 7kg, g ≈ 10 m/s², height = 2m     
 
      = 7*10*2
 
       = 140 Joules.


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Answer:

  F = - 3.53 10⁵ N

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Reduce SI system

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As the bullet bounces the speed sign after the crash is negative

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The negative sign indicates that the force is exerted against the bullet

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3 years ago
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