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Monica [59]
2 years ago
14

What are the signs of the velocity, force, and acceleration (components) afterthe cart is released and is moving qway from the m

otion sensor? (The positive xdirection is toward the motion sensor, to the right.
Physics
1 answer:
SVETLANKA909090 [29]2 years ago
3 0

Answer:

car is moving away its direction is negative.

the speed must also be negative.

speed this distance decreases the acceleration is negative and if the speed is increasing the acceleration is positive.

Explanation:

In the exercise they indicate that the direction to the motion sensor is positive, as they indicate that the car is moving away its direction is negative.

The speed of the car is

           v = (x₂-x₁) / t

As the positions are negative, and the car moves away the speed must also be negative.

The analysis for acceleration must be very careful if the speed this distance decreases the acceleration is negative and if the speed is increasing the acceleration is positive.

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Answer:

(B) Resistor only

Explanation:

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In a purely resistive circuit, current and voltage are in phase.

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2 years ago
A 300 kg piano needs to be moved to the other side of the room. The maximum static frictional force is equal to 90 N and the kin
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Answer:

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Explanation:

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  • Solving for a:

        a = \frac{F_{net}}{m} = \frac{30 N}{300kg} = 0.1 m/s2 (3)

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