Answer my question plzz !!
any body

Answers

Answer 1

Answer:

The height is 80 meters.

Explanation:

The equation for the distance in the second segment of the fall is as below. In it, we use the initial velocity v1 that the ball had after completing the first segment. From this equation, v1 can be determined:

$h_2 = (1)/(2)gt_2^2+v_1t_2=0.5\cdot 10(m)/(s^2)\cdot 4 s^2+v_1\cdot 2 s=60m\implies\nv_1 = 20(m)/(s)$

Next, we use the kinematic equation for velocity at the end of the first segment of a free fall, to determine h1:

$v_1^2 = 2gh_1+v_0^2 = 2gh_1\implies h_1 = (v_1^2)/(2g)=20m$

The total height is then

$h = h_1 + h_2 = 20m + 60 m = 80m$

Related Questions

The East African rift is an example of what
What is the difference between distance and displacement? Give an example of a situation where distance and displacement both have the same magnitude. Give another example, where distance and displacement have different values. Make sure to address the terms "vector" and "scalar" in your response.
suppose a vacuum cleaner use 120 j of electrical energy. If 45 j are used to pull air into the vacuum cleaner, how efficient is the vacuum cleaner?
What are six forms of energy
The rate at which an object moves

Describe the role of the grass in the food web

Answers

Grass is a producer. It gets its energy from the sun, which i might add is by a process called,"photosynthesis", meaning the grass makes its own food. With this bew energy an animal such as a rabbit comes to eat it, that energy that the grass collected is now the rabbits.

The latent heat of fusion of alcohol is 50 kcal/kg and its melting point is -54oC. It has a specific heat of 0.60 in its liquid state. Calculate the energy needed to melt 2.0 kg of solid alcohol at -54o and raise it to a temperature of -4°C.40. kcal
100 kcal
160 kcal
280 kcal

Answers

Answer:

Explanation:

To melt the alcohol

Heat needed = M . L = 2 . 25 = 50 kcal

To warm up the alcohol

Heat needed = M . sp. ht. . ∆t = 2 . 0.6 . 100 = 120 kcal

Total heat needed = 170 kcal

Assuming that 0.6 kcal/ kg / ˚C is the specific heat and that the answer is wanted in kcal ( a rather odd unit to be in use here.)

How dose energy move through an ecosystem

Answers

Energy flows in one direction from producer to consumer to decomposer.

Organisms can be either producers or consumers in terms of energy flow through an ecosystem. Producers convert energy from the environment into carbon bonds, such as those found in the sugar glucose.

Why is it important to use the correct number of significant digits whenreporting the results of an experiment?
O
A. The number of significant digits indicates how many experiments
you performed
O
B. The number of significant digits indicates how spread out your
data are.
) C. The number of significant digits indicates what your average data
value is.
O
D. The number of significant digits indicates how precise your
measurements are

Answers

Answer:

The correct answer is D.

Explanation:

It is important to use the correct number of significant numbers when reporting the results of an experiment because they indicate the accuracy of the measurements. Significant numbers in measurement are those that provide fundamental information about uncertainty or accuracy of measurement.

Have a nice day!

Answer:

Explanation:

Scientists use significant figures to avoid claiming more accuracy in a calculation than they actually know.

How high has a 45 g golf ball been driven if it has a potential energy of 2.06 J?

Answers

Here, U = mgh

We have: m = 45 g = 0.045 Kg
U = 2.06 J, g = 9.8 m/s², h = ?

Substitute the values in the formula:
2.06 = 0.045 × 9.8 × h
2.06 = 0.441 × h
h = 2.06 / 0.441
h = 4.67 m

In short, your final answer would be 4.67 meters

Hope this helps!

PE=mgh
2.06 J = 2.06 kg·m²/s² = (0.045 kg)·(9.8 m/s²)·h
where h is the height the ball has reached
Solve for h:
h = 2.06/(0.045·9.8) = 4.67 to the nearest hundredth
h = 4.67 m

What is information that is encoded as a string of 1s and 0s?