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r-ruslan [8.4K]
3 years ago
11

State True or False:If the positive x-axis points to the right and the x-component of velocity is negative, the cart must be mov

ing to the left.
Physics
1 answer:
umka2103 [35]3 years ago
7 0

Answer:

True

Explanation:

Velocity is a vector, therefore it consists of two elements:

- A magnitude (also called speed), which is the ratio between the displacement of the object and the time taken

- A direction, which corresponds to the direction of motion of the object

Therefore, velocity can be describes as positive or negative, depending on the direction which has been chosen as positive. If we chose the positive x-axis as positive direction, therefore:

- if the object is moving to the right (positive x-direction), the velocity will be positive

- if the object is moving to the left (negative x-direction), the velocity will be negative

So, in this case, since the velocity of the cart is negative, it must be moving to the left.

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Elenna [48]

Answer:

1,780,000 N

Explanation:

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Force = pressure × area

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F = 1,780,000 N

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A rock is rolling down a hill, and it’s halfway down. Would it have both Kintectic engery and Potenial engery? PLEASE HELP
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Pie

Explanation:

It is given that,

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Time period, t = 20 seconds

(a) Impulse is given by the product of force and time taken i.e.

J=F.\Delta t

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(b) Impulse is also given by the change in momentum i.e.

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