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Blizzard [7]
3 years ago
8

The force of gravity on an object varies directly with its mass. The constant of variation due to gravity is 32.2 feet per secon

d squared. Which equation represents F, the force on an object due to gravity according to m, the object’s mass?F = 16.1mF =F = 32.2mF =
Physics
2 answers:
never [62]3 years ago
7 0

Answer:

3rd option is correct: F = 32.2m

Explanation:

vodka [1.7K]3 years ago
5 0
<h2>Answer: F=32.2m</h2>

Explanation:

According Newton's 2nd Law of Motion the force F is directly proportional to the mass m and to the acceleration a of a body:

F=m.a (1)

When we talk about the force of gravity on an object (the weight) the constant acceleration is due gravity, this means:

a=g=32.2ft/s^{2} (2)

Substituting (2) in (1):

F=m(32.2ft/s^{2}) (3)

This means the equation that best represents the force on an object due to gravity according to its mass, among the given options is:

F=32.2m

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In a ballistics test, a 24 g bullet traveling horizontally at 1200 m/s goes through a 31-cm-thick 320 kg stationary target and e
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Answer:

The  velocity is  v_t  =  0.02175 \  m/s

Explanation:

From the question we are told that

   The  mass of the bullet is  m_b  =  0.024 \  kg

    The initial speed of the bullet is  u_b  =  1200 \  m/s

   The mass of the target is  m_t  =  320 \  kg

    The  initial velocity of target is  u_t  =  0  \ m/s

    The  final velocity of the bullet is  is  v_b  =  910 \  m/s

   

Generally according to the law of momentum conservation we have that

      m_b *  u_b  +  m_t *  u_t  =  m_b *  v_b  +  m_t  *  v_t

=>   0.024  *  1200  +  320 *  0  =  0.024 *  910   +  320  *  v_t

=>    v_t  =  0.02175 \  m/s

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4 years ago
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Read 2 more answers
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