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Naya [18.7K]
2 years ago
13

SOMEONE HELP  ASAP PLSS

Physics
2 answers:
kirill115 [55]2 years ago
8 0

–0.05 m/s

Explanation:

The total momentum of the system player+basketball must be conserved before and after the ball has been thrown.

Before throwing the ball, the total momentum of the system is zero, because can assume both the player and the basketball being at rest:

p_i

The total momentum after the ball has been thrown is instead the sum of the momenta of the the player and of the basketball:

p_f=m_p v_p + m_b v_b

where

m_p = 59 kg is the player's mass

v_p is the player's velocity

m_b=0.51 kg is the ball's mass

v_b=6 m/s is the ball's velocity

For the conservation of momentum, we have

p_i=p_f

0=m_p v_p + m_b v_b

v_p=-\frac{m_b v_b}{m_p}=-\frac{(0.51 kg)(6 m/s)}{59 kg}=-0.05 m/s

And the negative sign means that the player travels in the opposite direction to the ball.

Kay [80]2 years ago
8 0
We apply the momentum preservation principle and we have p before =p after
0=6*0.51+59u
u=-0.05m/s
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Answer:

\mu =0.75

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7 0
3 years ago
An object is placed in front of a diverging lens, such that the object-to-image distance is 71 cm.
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Explanation:

Given that,

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\dfrac{1}{f}=\dfrac{1}{-26}+\dfrac{1}{97}

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Using formula of magnification

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I select true helllpppp me
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your right answer is true

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