3 years ago

sa është syprina e gjurmës të këmbës të njeriut nëse njeriu ri në këmbë pa lëvizur dhe ka masë prej 84kg shtypja është 16.8pa

Physics

1 answer:

gogolik [260]3 years ago

8 0

I can’t understand that-

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Emily uses a rifle to shoot a bullet at a target. The bullet has a mass of 13 grams. The rifle has a mass of 3,500 grams. When s

sp2606 [1]

Force exerted by the bullet = mass * acceleration = 0.013 * 850 = 11.05 Newtons.

the rifle exerts same force in opposite direction so we have

11.05 = 3.5 * a
acceleration = 11.05 / 3.5 = 3.16 m /s^-2

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3 years ago

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A stone is dropped from a cliff. What will be its speed when it was fallen 100 m?

Mars2501 [29]

Answer:

final velocity will be44.72m/s

Explanation:

HEIGHT=h=100m

vi=0m/s

vf=?

g=10m/s²

by using third equation of motion for bodies under gravity

2gh=(vf)²-(vi)²

evaluating the formula

2(10m/s²)(100m)=vf²-(0m/s)²

2000m²/s²=vf²

√2000m²/s²=√vf²

44.72m/s=vf

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4 years ago

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Suppose you run into a wall at 4.5 meters per second (about 10 mph). Let's say the wall brings you to a complete stop in 0.5 sec

STatiana [176]

Answer with Explanation:

We are given that

Initial velocity,u=4.5 m/s

Time=t =0.5 s

Final velocity=v=0m/s

We have to find the deceleration and estimate the force exerted by wall on you.

We know that

Acceleration= $\frac{v-u}{t}$

Using the formula

Acceleration= $a=\frac{0-4.5}{0.5}$

deceleration=a= $-9m/s^2$

We know that

Force =ma

Using the formula and suppose mass of my body=m=40 kg

The force exerted by wall on you

Force= $40\times (9)=360N$

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3 years ago

Static electricity is the

guapka [62]

Unlike charges attracting each other

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3 years ago

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What units are used to measure and communicate the amount of a force?

jeyben [28]

Answer:

The SI unit of force is the newton, symbol N. The base units relevant to force are: The metre, unit of length — symbol m. The kilogram, unit of mass — symbol kg.

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3 years ago

sa është syprina e gjurmës të këmbës të njeriut nëse njeriu ri në këmbë pa lëvizur dhe ka masë prej 84kg shtypja është 16.8pa​

sa është syprina e gjurmës të këmbës të njeriut nëse njeriu ri në këmbë pa lëvizur dhe ka masë prej 84kg shtypja është 16.8pa