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spin [16.1K]
2 years ago
7

Please help if you can

Physics
1 answer:
denis23 [38]2 years ago
6 0

Answer:

The answer is B

Explanation:

Because when the both sides aren't balanced one side has to cause motion. (fall down)

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The bacoby

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A small car with a mass of 800kg moving with a velocity of 27.8 m/s. The car stops at a yellow light in 3.9 seconds. What force
raketka [301]

Answer:

F = 5702.56 N

Explanation:

Given that,

Mass of a small car, m = 800 kg

Initial speed of the car, u = 27.8 m/s

Final speed, v = 0

Time, t = 3.9 s

We need to find the force did it take for the car to stop.

The force acting on an object is given by :

F=ma\\\\F=\dfrac{m(v-u)}{t}\\\\F=\dfrac{800\times (0-27.8)}{3.9}\\\\F=-5702.56\ N

So, the magnitude of force acting on the car to stop is 5702.56 N.

4 0
3 years ago
5. A boy rides his skateboard 50 meters (m) West. Then he turns around
Ann [662]

Answer:

-30 m

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5 0
3 years ago
A train is traveling away from you at 120 km/h. it blows its whistle, and you hear a tone of 0.400 kHz. Take the speed of sound
Vaselesa [24]

Answer:B)439.21 Hz

Explanation:

Given

velocity of train v=120 km/h\approx 120\times \frac{5}{18}=33.33 m/s

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f_a=(\frac{c}{c+v})\cdot f

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400=\frac{340}{373.33}\cdot f

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f=439.21 Hz

5 0
3 years ago
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