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3 years ago

Can someone help me?!!!!!

Physics

1 answer:

igor_vitrenko [27]3 years ago

6 0

Answer:

7 units, north

Explanation:

This is a problem of vector subtraction. We have:

- Vector A: magnitude 2 units, direction to the north

- Vector B: magnitude 5 units, direction to the south

If we take the north as positive direction, we can write

$A = +2\\B=-5$

Since we want to find $A-B$ (vector subtraction), we have to change the sign of B, so we find:

$A-B=+2-(-5))=+2+5=+7$

And the positive sign means the direction is north.

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Andreyy89

Answer:

<h3>The answer is 4 N</h3>

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

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3 years ago

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3 years ago

On a snowy day, max (mass = 15 kg) pulls his little sister maya in a sled (combined mass = 20 kg) through the slippery snow. max

sesenic [268]

Work done by a given force is given by

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here on sled two forces will do work

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2. Frictional force due to ground

Now by force diagram of sled we can see the angle of force and displacement

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3 years ago

Theweight ofof body is 420N .Calculate its mass

Nady [450]

Answer:

42.87

Explanation:

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420/9.8 which equals 42.87.

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3 years ago

You stand on top a building 44 m tall with a water balloon. You drop the water balloon from rest. How fast is the balloon moving

Alecsey [184]

<h2>The balloon is moving when it is halfway down the building at 20.78 m/s.</h2>

Explanation:

We have equation of motion v² = u² + 2as

Initial velocity, u = 0 m/s

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Displacement, s = 0.5 x 44 = 22 m

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v² = u² + 2as

v² = 0² + 2 x 9.81 x 22

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The balloon is moving when it is halfway down the building at 20.78 m/s.

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3 years ago