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
NNADVOKAT [17]
3 years ago
15

You drop a rock off a high cliff to the sea below. When the rock is several metres below you, you drop a second rock from the sa

me location. Before the rocks hit the sea, which of the following is true?
A) The separation (distance) between the rocks will decrease as they fall.

B) The separation (distance) between the rocks will stay the same as they fall.

C) The separation (distance) between the rocks will increase as they fall.

D)It's impossible to say anything about the distance between the rocks without more details.
Physics
1 answer:
aleksley [76]3 years ago
4 0

The statement “the separation (distance) between the rocks will stay the same as they fall” is TRUE. The correct answer between all the choices given is the second choice or letter B. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

You might be interested in
Cart 1 of mass m is traveling with speed 2vo in the +x-direction when it has an elastic collision with cart 2 of
iogann1982 [59]

Answer:

Explanation:

Momentum conservation

m2v_0+2mv_0=mv_1+2mv_2 \quad (1/m) \quad 4v_0=v_1+2v_2\\

Kinetic energy conservation

\displaystyle \frac{1}{2}m(2v_0)^2+\frac{1}{2}2mv_0^2=\frac{1}{2}mv_1^2+\frac{1}{2}2mv_2^2 \quad (1/m) \quad 6v_0^2=v_1^2+2v_2^2

Solve the system

6 0
3 years ago
____ is a pesticide that influenced society by increasing crop yield, but it also caused human and animal sickness.
Ilya [14]

I think your answer would be DDT, but don't hold me to it

5 0
3 years ago
An elevator is moving down with an acceleration of 3.36 m/s2.
sergeinik [125]

Answer : 413.44N

Here it is given that an elevator is moving down with an acceleration of 3.36 m/s² . And we are interested in finding out the apparent weight of a 64.2 kg man . For the diagram refer to the attachment .

  • From the elevator's frame ( non inertial frame of reference) , we would have to think of a pseudo force.
  • The direction of this force is opposite to the direction of acceleration the frame and its magnitude is equal to the product of mass of the concerned body with the acceleration of the frame .
  • When a elevator accelerates down , the weight recorded is less than the actual weight .

From the Free body diagram ,

\sf\longrightarrow Weight = mg - ma \\

\sf\longrightarrow Weight = m ( g - a ) \\

  • Mass of the man = 64.2 kg

\sf\longrightarrow Weight = 64.2( 9.8 - 3.36) N\\

\sf\longrightarrow Weight = 64.2 * 6.44 N\\

\sf\longrightarrow \underline{\boxed{\bf Weight_{apparent}= 413.44 N }} \\

5 0
2 years ago
A river flows at 2m/s. The velocity of a ferry relative to the shore is 4m /s at right angle to the current. What is the velocit
monitta

The velocity of the ferry relative to the current is 4.5 m/s.

<h3>Relative velocity</h3>
  • Relative velocity is the velocity of a body as observed from the reference point of another body either stationary or in motion.

Since the river is flowing parallel to the shore and the ferry is moving perpendicular to the shore, their velocities are at right angles to each other.

The two velocities form a right angled-triangle of sides 2, 4 and a hypotenuse which gives the relative velocity of the ferry to the current.

Using Pythagoras rule:

  • c² = a² + b²
  • Let c be the hypotenuse
  • a =  velocity of the ferry, and
  • b = the velocity of the current, and

c² = 4² + 2²

c² = 16 + 4

c = 20

c = √20

c = 4.47 m/s

c ≈ 4.5 m/s

Therefore, the velocity of the ferry relative to the current is 4.5 m/s.

Learn more about relative velocity and Pythagoras rule at: brainly.com/question/25617868

5 0
2 years ago
Which type of electromagnetic wave often encodes information for sound?
AysviL [449]
I think the answer is D

Hope this helps :D
8 0
3 years ago
Other questions:
  • What is the speed of a 48-kilogram dog running across<br>a lawn with 216 joules of kinetic energy?​
    9·1 answer
  • The amount of dissolved oxygen in water may decrease because of the 
    14·2 answers
  • The (nonconservative) force propelling a 1.50 × 103-kg car up a mountain road does 4.70 × 106 J of work on the car. The car star
    14·1 answer
  • A water bath in a physical chemistry lab is 1.55 m long, 0.710 m wide, and 0.570 m deep (high). If it is filled to within 3.55 i
    5·1 answer
  • A runner whose mass is 54 kg accelerates from a stop to a speed of 7 m/s in 3 seconds. (A good sprinter can run 100 meters in ab
    9·1 answer
  • A chimpanzee sitting against his favorite tree gets up and walks 70.9 m due east and 31.9 m due south to reach a termite mound,
    5·1 answer
  • I could really use some help on this question guys! Will give brainliest!
    6·2 answers
  • Is a pair of sneakers a want or a need? Is the most expensive pair of sneakers a want or a need?
    5·1 answer
  • Assume your computer has a power rating of 50.0 W, and you use your computer for 7.0 hours a day for a normal school day. If the
    9·1 answer
  • How much of Earth's surface is dry, ice-free land? *
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!