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kotegsom [21]
3 years ago
7

A car has 400 kgm/s worth of momentum and runs into a truck initially at rest. What is the initial momentum of the truck?

Physics
1 answer:
prisoha [69]3 years ago
8 0

Answer:

0 kgm/s

Explanation:

The momentum is the product of mass(m) and velocity(v).

Initially the velocity of truck is 0 m/s so the product of mass and velocity becomes 0.

It does not matter what is the weight of truck, because the velocity will make the product of m*v = 0

It does not matter what is the momentum of car.

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A wheel decelerates from 13.5 rad s−1 to 6.0 rad s−1 in 7 s. Calculate the angular displacement​
Igoryamba

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<em>Angular displacement=68.25 rad</em>

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If the angular speed varies from ωo to ωf in a time t, then the angular acceleration is given by:

\displaystyle \alpha=\frac{\omega_f-\omega_o}{t}

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\displaystyle \theta=\omega_o.t+\frac{\alpha.t^2}{2}

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