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
ludmilkaskok [199]
3 years ago
8

A plane is flying east when it drops some supplies to a designated target below. The supplies land after falling for 10 seconds.

How high above the ground was the airplane when the supplies were dropped?
120 meters

490 meters

980 meters

49 meters

As the supplies fell, they traveled 650 meters horizontally. How fast were the supplies and the airplane moving forward? Remember that it took 10 seconds for them to reach the ground.

65 m/s

6500 m/s

0.154 m/s

660 m/s
Physics
1 answer:
Ivanshal [37]3 years ago
4 0

Part 1)

here we know that supply took 10 s to reach the ground

so here we will have

y = \frac{1}{2}gt^2

y = \frac{1}{2}\times 9.8 \times 10^2

y = \frac{1}{2}\times 9.8 \times 100

y = 490 m

Part 2)

Here all the supply covered horizontal distance of 650 m in 10 s interval of time

so here we can say

speed = \frac{distance}{time}

v = \frac{650}{10}

v = 65 m/s


You might be interested in
Atoms with a low ionization energy give up their outer valence electrons with
Sedbober [7]

Answer:

a. true

Explanation:

i think

that my answer

7 0
3 years ago
A marble is placed at Location W. When the marble is released, it rolls down the track.
Norma-Jean [14]

Answer:

Z

Explanation:

6 0
2 years ago
Read 2 more answers
Which factors allow for life on Earth​
Elan Coil [88]

Are there supposed to be multiple choices for this question?

6 0
3 years ago
Read 2 more answers
It is your parent's 25th Wedding Anniversary and you thought it would be special to throw them a surprise party. Your entire fam
KonstantinChe [14]

Answer:

120 miles per hour.

Explanation:

We need to find the time it takes my parents to drive home from the cottage. Since my father drives at 60 miles per hour, and the cottage is 240 miles from our home, and distance = speed × time. So, time = distance/speed = 240 mi/60 mi/h = 4 h.

So, it will take my father 4 hours to drive home from the cottage.

Since I have 2 hours to prepare for the party, the time left for me to drive to the cottage is 4 - 2 hrs = 2 hrs.

So, I'm supposed to drive to the cottage in at most 2 hours.

The speed at which I must drive in this time period is thus,  speed = distance/time = 240 miles/2 hours = 120 miles per hour.

So, I must drive at a minimum speed of 120 miles per hour.

4 0
3 years ago
An 800-kHz radio signal is detected at a point 8.5 km distant from a transmitter tower. The electric field amplitude of the sign
Temka [501]

Answer:

Explanation:

Given that,

Frequency of radio signal is

f = 800kHz = 800,000 Hz.

Distance from transmitter

d = 8.5km = 8500m

Electric field amplitude

E = 0.9 V/m

The average energy density can be calculated using

U_E = ½•ϵo•E²

Where ϵo = 8.85 × 10^-12 F/m

Then,

U_E = ½ × 8.85 × 10^-12 × 0.9²

U_E = 3.58 × 10^-12 J/m²

The average electromagnetic energy density is 3.58 × 10^-12 J/m²

6 0
3 years ago
Read 2 more answers
Other questions:
  • Waves begin to "feel bottom" when the depth of water is
    6·2 answers
  • Calculate the potential energy of a rock that has a 45 kg mass and is sitting
    6·1 answer
  • The weight of a box is found to be 30 N. What is the approximate mass of the box?
    5·2 answers
  • A 90kg man is standing still on frictionless ice. His friend tosses him a 10kg ball, which has a horizontal velocity of 20m/s. A
    5·2 answers
  • An astronomer whose secret hobby is riding merry-go-rounds has dedicated his career to finding the stars that rotate the most ra
    12·1 answer
  • An object at rest starts accelerating.
    10·1 answer
  • What part of the Milky Way allows for determination of its rotational direction? A. Celestial body B. Galactic body C. Galactic
    13·2 answers
  • Use the scenario below for questions 4-7.
    11·1 answer
  • Energy is the energy an object has because it is in motion. *
    9·1 answer
  • Describe your ecological footprint. What do the results mean? What are some things
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!