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
nekit [7.7K]
2 years ago
9

An observer standing near a window 5 m high observe that an object falling downwards is passing across the window in 0.5 s. Find

at what height above the window the object was dropped. (g = 10 m/s2).​
Physics
1 answer:
Valentin [98]2 years ago
8 0

Answer:

Explanation:

An object in free fall, NOT experiencing parabolic motion, has an equation of

h(t)=\frac{1}{2} gt^2+h_0 which says:

The height of an object with respect to time in seconds is equal to the pull of gravity times time-squared plus the height from which it was dropped. Normally we use -9.8 for gravity but you said to use 10, so be it.

For us, h(t) is 5 because we are looking for the height of the window when the object is 5 m off the ground at .5 seconds;

g = 10 m/s/s, and

t = .5sec

5=\frac{1}{2}(-10)(.5)^2+h and

5 = -5(.5)² + h and

5 = -5(.25) + h and

5 = -1.25 + h so

h = 6.25

That's how high the window is above the ground.

You might be interested in
PLEASE ANSWER 50 points
Evgen [1.6K]
Increase the force the engine provides and decrease the mass of the car
6 0
3 years ago
In what way is a piano an example of a quantized system?
uranmaximum [27]

When you play a piano, your energy increases in a uniform, continuous manner and is therefore quantized.When you play a piano, you can press only on individual keys, so that your energy is restricted to certain values and is therefore quantized.

7 0
3 years ago
Are electric files lines due to an isolated positive point charge emanate radially away from the charge?
lara31 [8.8K]

Answer:

6

Explanation:

4 0
3 years ago
A stone was dropped off a cliff and hit the ground with a speed of 96 ft/s. What is the height of the cliff? (Use 32 ft/s2 for t
nadezda [96]
The initial velocity of the stone is 0 ft/s. Given the initial velocity (Vi), final velocity (Vf), and acceleration due to gravity (g), the distance may be calculated through the equation,
                                     d = ((Vf)² - (Vi)²) / 2g
Substituting the known values,
                                     d = ((96 ft/s)² - 0))/ (2x32.2)
The value of d is 143.10 ft. 
4 0
3 years ago
Pleeease help meeeeee
VLD [36.1K]
The average speed is 52km
5 0
2 years ago
Other questions:
  • Two Masses, a Pulley, and an Inclined Plane. . Block 1, of mass m1 = 0.700kg , is connected over an ideal (massless and friction
    8·1 answer
  • What do all heterotrophs have in common?
    13·1 answer
  • Potential energy increases with the greater height mass of an object.True or False
    14·1 answer
  • Using the work energy theorem. What is the velocity of a 850kg car after starting at rest when 13,000J of work is done to it.
    12·1 answer
  • Bill is throwing a football at four targets and attempting to knock them over. Which of the following targets will be hardest fo
    6·1 answer
  • Tarzan, in one tree, sights Jane in another tree. He grabs the end of a vine with length 20 m that makes an angle of 45∘ with th
    15·1 answer
  • Sigma F = T-10m but a = 0 in the equation sigma F = ma
    12·1 answer
  • A gauge is attached to a pressurized nitrogen tank reads a gauge pressure of 28 in of mercury. If atmospheric pressure is 14.4 p
    8·1 answer
  • Under conditions of conservation of energy where the initial energy object is only gravitiational potential energy and the final
    9·1 answer
  • Need help again PLEASE HELP!!!!
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!