3 years ago

What effect does an unbalanced force have on an object?

1 answer:

6 0

Answer:

An unbalanced force can change an object's motion. An unbalanced force acting on a still object could make the object start moving. An unbalanced force acting on a moving object could make the object change direction, change speed, or stop moving.

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A machine gun with a mass of 5kg fires a 50g bullet at a speed of 100m/s calculate the recoil speed of the machine gun

Alenkinab [10]

Answer:

Explanation:

Convert mass of bullet 50g in kg

✯ Divide 50 by 1000

⟹ 50/1000

∴ 0.05 kg

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3 years ago

Draw the vector C⃗ =A⃗ +2B⃗ .

spin [16.1K]

Answer:

A) C is 2 units towards right

B) C is 9 units towards right and 3 units towards up

C) C is 4 units towards right and 1 unit towards down

Explanation:

Drawings are given in the attachment.

A)Since,

A is 4 units towards right,

B is 1 unit towards left,

Then,

C is 2 units towards right.

B) Since,

A is 4 units towards right and 2 units towards up,

B is 1 unit towards left,

Then,

C is 9 units towards right and 3 units towards up.

C) Since,

A is 4 units towards right and 2 units towards up,

B is 1 unit towards right, and 1 unit towards down

Then,

C is 4 units towards right and 1 unit towards down.

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4 years ago

A body of mass 400 kg is suspended at a lower end of a light vertical chain and is being pulled up vertically. Initially the bod

yKpoI14uk [10]

Answer:31.62 m/s

Explanation:

Given

mass of body $m=400 kg$

Pull on chain is $F_1=6000g N=60 kN$

Pull get smaller at the rate of $F_2=360g N/m$

Net Upward Force $F=6000 g-360 g\times 10=24 kN$

net acceleration $a=\frac{F}{m}$

$a=\frac{24\times 1000}{m}$

$a=\frac{24000}{400}$

$a=60 m/s^2$

but g is acting downward

$a_{net}=a-g=60-10=50 m/s^2$

using $v^2-u^2=2 as$

here initial velocity is zero

$v^2=2\times 50\times 10$

$v=31.62 m/s$

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4 years ago

Hot water is poured into a mug and the mug gets hot. This is an example of which type of energy transfer?

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The answer is B: Conduction

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3 years ago

Jessica pulls on a washing machine with 200 N of force. Mark helps out and pulls on the washing machine in the same direction wi

lubasha [3.4K]

Answer:

600N

Explanation:

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3 years ago