3 years ago

Help asap please thank you

Physics

1 answer:

Romashka [77]3 years ago

5 0

I would say 8 since 11-3 is 8 so it took that much seconds to accelerate. Sorry if I’m wrong

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A 36,287 kg truck has a momentum of 907,175 kg • . What is the truck’s velocity?

Snowcat [4.5K]

By definition,
Momentum = Mass * Velocity

Let v = the velocity of the truck, m/s
The mass of the truck is 36,287 kg.
The momentum is 907,175 (kg-m)/s.

Therefore
907,175 (kg-m)/s = (36287 kg)*(v m/s)
v = 907175/36287 = 25 m/s

Answer: 25 m/s

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Two blocks of masses 8 kg and 4.3 kg are placed on a horizontal, frictionless surface. A light spring is attached to one of them

oee [108]

Answer:

The velocity of other mass is 3.60 m/s.

Explanation:

Given that,

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mass of second block = 4.3 kg

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Using conservation of momentum

$(m_{1}+m_{2})u=m_{1}v_{1}+m_{2}v_{2}$

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m₂ =mass of second block

m₁ =mass of first block

v₂ =speed of second block

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$8+4.3\times0=8\times v_{1}+4.3\times6.7$

$v_{1}=\dfrac{-4.3\times6.7}{8}$

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Negative sign represent the opposite direction of initial value.

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3 years ago

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$\eta = 1 - \frac{Q_2}{Q_1}$

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