All categories

3 years ago

Your backpack has a mass of 8 kg. You drop it from a height of 1.3m. How much work is done by gravity as the backpack falls?

Physics

2 answers:

olga_2 [115]3 years ago

6 0

Answer:

The answer is C.

Explanation:

I guessed and it was right

Dahasolnce [82]3 years ago

3 0

Answer:

Work done by the gravity, W = 102 J

Explanation:

It is given that,

Mass of the backpack, m = 8 kg

It is dropped from the height of, h = 1.3 m

We have to find the work done by the gravity as the back pack fall. Work done by the gravity is given by the product of force and distance covered by an object. Mathematically, it is given by :

W = F × d

∵ F = m g

⇒ W = mg h

$W=8\ kg\times 9.8\ m/s^2\times 1.3\ m$

W = 101.92 Joules

W = 102 Joules

So, the work done by the gravity is 102 J. Hence, this is the required solution.

You might be interested in

Scientists have detected sound waves with frequencies as low as 13 Hz being produced by

Lena [83]

Answer:

The wavelength of the sound waves are, λ = 26.92 m

Explanation:

Given data,

The frequency of the sound waves, f = 13 Hz

The speed of sound waves in air, v = 350 m/s

The velocity of the wave in the medium is equal to the product of its wavelength and its frequency.

The formula for the wavelength of the waves is,

λ = v / f

Substituting the given values in the above equations,

λ = 350 m/s / 13 Hz

= 26.92 m

Hence, the wavelength of the sound waves are, λ = 26.92 m

4 0

3 years ago

What happens whenever energy is transformed from one form to another?

andriy [413]

Answer:

Energy transformation is when energy changes from one form to another – like in a hydroelectric dam that transforms the kinetic energy of water into electrical energy. While energy can be transferred or transformed, the total amount of energy does not change – this is called energy conservation.

Explanation:

Hope This Helps!!

God Bless!!

~DuffyDuck~

3 0

3 years ago

Does the inertia of an object change as the object’s velocity changes explain

Sever21 [200]

Inertia is proportional to mass. It is a measure of the resistance to changes in velocity. Inertia is a property of mass and cannot change. Momentum changes as an object changes its velocity. Good luck on your assignment and have a great day! :D

8 0

3 years ago

What is the terminal velocity of a 6.00-kg mass object in falling with a drag force with a magnitude that depends on speed, v, a

3241004551 [841]

When object reached the terminal speed then its acceleration is zero

So as per Newton's II law we can say

$F_{net} = 0$

now in that case we can say that net force is zero so here weight of the object is counter balanced by the drag force when it will reach at terminal speed

so we can write

$mg - F_d = 0$