3 years ago

Displacement vectors of 3 m and 5 m in the same direction combine to make a displacement vector that is _____ in magnitude.

Physics

2 answers:

Alona [7]3 years ago

4 0

The correct answer is 8 meters.

KiRa [710]3 years ago

4 0

the answer is 8 meters

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sammy [17]

Answer:

$-0.25 rad/s^2$

Explanation:

The equivalent of Newton's second law for rotational motions is:

$\tau = I \alpha$

where

$\tau$ is the net torque applied to the object

I is the moment of inertia

$\alpha$ is the angular acceleration

In this problem we have:

$\tau = -12.5 Nm$ (net torque, with a negative sign since it is a friction torque, so it acts in the opposite direction as the motion)

$I=50.0 kg m^2$ is the moment of inertia

Solving for $\alpha$ , we find the angular acceleration:

$\alpha = \frac{\tau}{I}=\frac{-12.5 Nm}{50.0 kg m^2}=-0.25 rad/s^2$

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Alecsey [184]

Answer:

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Explanation:

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