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spin [16.1K]
2 years ago
14

A 45kg sled is being pulled from camp by 5 dogs each capable of exerting 25N force on the sled. If the sled starts from rest and

the frozen ground exerts 15N of friction, how far will the sled be from the camp after 7s?
Physics
2 answers:
nirvana33 [79]2 years ago
7 0

Explanation:

. An object starts from rest and accelerates uniformly at 5 m/s2 for 3 seconds, ... total mass of the sled and Michelle is 70 kg.

defon2 years ago
4 0

Answer:

58.8m

Explanation:

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The answer is biodiversity

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imagine the first Olympic Games conducted on the moon in a specially designed dome. state and explain which sports would produce
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Particle A and particle B are held together with a compressed spring between them. When they are released, the spring pushes the
yaroslaw [1]

Answer:

 K_a = 8,111 J

Explanation:

This is a collision exercise, let's define the system as formed by the two particles A and B, in this way the forces during the collision are internal and the moment is conserved

initial instant. Just before dropping the particles

          p₀ = 0

final moment

          p_f = m_a v_a + m_b v_b

          p₀ = p_f

          0 = m_a v_a + m_b v_b

tells us that

          m_a = 8 m_b

         

           0 = 8 m_b v_a + m_b v_b

           v_b = - 8 v_a                    (1)

indicate that the transfer is complete, therefore the kinematic energy is conserved

starting point

           Em₀ = K₀ = 73 J

final point. After separating the body

          Em_f = K_f = ½ m_a v_a² + ½ m_b v_b²

           K₀ = K_f

           73 = ½ m_a (v_a² + v_b² / 8)

           

we substitute equation 1

           73 = ½ m_a (v_a² + 8² v_a² / 8)

           73 = ½ m_a (9 v_a²)

           73/9 = ½ m_a (v_a²) = K_a

            K_a = 8,111 J

3 0
3 years ago
Please help !!!!!!!!!!!!’
Zanzabum

Answer:

GYU

Explanation:UGGGGGGGGGIBKLJ

6 0
2 years ago
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