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Darina [25.2K]
2 years ago
7

I will give brainliest to whoever answers this in less than 10 minutes.

Physics
1 answer:
Ipatiy [6.2K]2 years ago
8 0

Answer:

D) No, because of the way work is defined

Explanation:

There is no motion in the direction of the force, then no work is done by that force. ... But the work done on the box is zero since by moving in a straight line at constant speed, its energy is remaining the same.

Hope it helps

Please mark me as the brainliest

Thank you

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A 100-kg tackler moving at a speed of 2.6 m/s meets head-on (and holds on to) an 92-kg halfback moving at a speed of 5.0 m/s. Pa
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Given that,

Mass of trackler, m₁ = 100 kg

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To find,

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Solution,

The momentum of the system remains conserved in this case. Let v is the mutual speed after the collision. Using conservation of momentum as :

m_1u_1+m_2u_2=(m_1+m_2)V\\\\V=\dfrac{m_1u_1+m_2u_2}{(m_1+m_2)}\\\\V=\dfrac{100\times 2.6+92\times (-5)}{(100+92)}\\\\V=-1.04\ m/s

So, the mutual speed immediately after the collision is 1.04 m/s but in opposite direction.

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