1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
BlackZzzverrR [31]
3 years ago
12

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

or

W = 102 Joules

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

You might be interested in
.... is increasing the temperatures of earths oceans and atmosphere, leading to more intense storms of all types, including hurr
kirza4 [7]
I think with the increasing of temperatures of earths oceans and atmosphere is causing climate change and global warming. When the ocean heats up a lot of sea animals die and with the hot temps in the atmosphere is causing rare hot tempatures in some places in the world.
It can cause some intense storms but it mostly heats up the world and cause a lot of problems.

I hope i answered your question right.
5 0
4 years ago
Equation of motion, for a simplicity assume that the cart begins to moves at t=0 and reaches a speed of 0.44m/s at t=1.8 sec. Wr
nignag [31]

Answer:

cudkldllfkfklldldlflfkfkjkkfkfkfllflfkfkkkfllf

6 0
3 years ago
8 A car accelerates at a rate of 10m/s
zheka24 [161]

Answer:

From the First Law of Motion

Vf = Vi + at

"It reaches a speed of 52m/s" meaning the Final speed Vf=52

a(acceleration)=10m/s²

t=4s

Applying the formula

52=Vi + 10(4)

Vi = 52-40

Vi = 12m/s

5 0
3 years ago
2. Interpret Visuals If a certain
Firdavs [7]

Answer:disproportionatedisproportionatedisproportionatedisproportionatedisproportionatedisproportionatedisproportionatedisproportionatedisproportionatedisproportionatedisproportionatedisproportionatedisproportionatedisproportionatedisproportionatedisproportionatedisproportionatedisproportionate

Explanation:

6 0
3 years ago
Read 2 more answers
A car accelerates from rest at 5.75m/s2 for 4.4 sec when it runs out of pavement and runs into some mud. In the mud it accelerat
just olya [345]

Answer:

113.85 m

Explanation:

When the car is on the pavement:

v₀ = 0 m/s

a = 5.75 m/s²

t = 4.4 s

Find: Δx and v

Δx = v₀ t + ½ at²

Δx = (0 m/s) (4.4 s) + ½ (5.75 m/s²) (4.4 s)²

Δx = 55.66 m

v = at + v₀

v = (5.75 m/s²) (4.4 s) + 0 m/s

v = 25.3 m/s

When the car is in the mud:

v₀ = 25.3 m/s

v = 0 m/s

a = -5.5 m/s²

Find: Δx

v² = v₀² + 2aΔx

(0 m/s)² = (25.3 m/s)² + 2 (-5.5 m/s²) Δx

Δx = 58.19 m

The total displacement is therefore:

55.66 m + 58.19 m = 113.85 m

4 0
4 years ago
Other questions:
  • What is the wavelength of a wave that travels at a speed of 3.0x10^8 m/s and has a frequency of 1.5x10^16 m/s?
    12·1 answer
  • Which of these geologic events is most closely associated with a transform plate boundary?
    9·1 answer
  • Which of the following statements is "true" of imagined risks?
    14·1 answer
  • 2. A student living in a 3-m × 4-m × 4-m dormitory room turns on her 100-W fan before she leaves the room on a summer day, hopin
    10·1 answer
  • Please help!
    15·2 answers
  • What is the equivalent resistance of a circuit that contains two 50.00
    13·2 answers
  • If an object on a horizontal frictionless surface is attached to a spring, displaced, and then released, it oscillates. Suppose
    12·1 answer
  • As it rains and snows near mountaintops, the water is transferred from the atmosphere back onto ground. What natural force pulls
    14·1 answer
  • Find out the speed of the car from home to school in meters per second.
    5·1 answer
  • Describe the relationship between temperature and resistance?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!