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zlopas [31]
3 years ago
7

You observe three carts moving to the right. cart a moves to the right at nearly constant speed. cart b moves to the right, grad

ually speeding up. cart c moves to the right, gradually slowing down. which cart or carts, if any, experience a net force to the right? (select all that apply.)
Physics
1 answer:
alisha [4.7K]3 years ago
7 0

The cart with speed increasing to the right ... cart-b ... 
has a net force to the right acting on it. 

The others ...

... Cart-a has no net force at all acting on it, so its speed isn't changing.

... Cart-c has a net force toward the left acting on it, so its speed 
toward the left is INcreasing.  (That's the same thing as its speed
toward the right DEcreasing.
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Answer:

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Explanation:

Only way to do that is if aliens with far superior technology wise came to earth and did it

6 0
2 years ago
A shell is fired with a horizontal velocity in the positive x direction from the top of an 80 m high cliff. The shell strikes th
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Answer:

V = 331.59m/s

Explanation:

First we need to calculate the time taken for the shell fire to hit the ground using the equation of motion.

S = ut + 1/2at²

Given height of the cliff S = 80m

initial velocity u = 0m/s²

a = g = 9.81m/s²

Substitute

80 = 0+1/2(9.81)t²

80 = 4.905t²

t² = 80/4.905

t² = 16.31

t = √16.31

t = 4.04s

Next is to get the vertical velocity

Vy = u + gt

Vy = 0+(9.81)(4.04)

Vy = 39.6324

Also calculate the horizontal velocity

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Find the magnitude of the velocity to calculate speed of the shell as it hits the ground.

V² = Vx²+Vy²

V² = 329.21²+39.63²

V² = 329.21²+39.63²

V² = 108,379.2241+1,570.5369

V² = 109,949.761

V = √ 109,949.761

V = 331.59m/s

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7 0
3 years ago
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D. It represents a very large, complex system.​

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I just did it on a p e x...

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