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
harkovskaia [24]
2 years ago
15

Rock A is thrown horizontally off of a cliff with a velocity of 20m/s. The rock lands 60m from the base of the cliff.

Physics
1 answer:
mixas84 [53]2 years ago
4 0

Answer:

B. 44.1

Explanation:

We can use the equation y=1/2gt^2 to find the distance in the vertical direction, where y= distance in the vertical direction, g=acceleration due to gravity, and t=time

we only know acceleration due to gravity(9.8m/s^2),

plug in known variables,

y=1/2*9.8*t^2

we still need to plug in the time variable.

In order to do that, we an use the s=d/t equation and re arrange that formula to get: t=d/s, where t=time, d=distance, and s=speed.

plug in known variables,

t=60/20

t=3

now that we know the time, we can plug that into our original equation

y=1/2*9.8*3^2

simplify,

y=4.9*3^2

y=4.9*9

y=44.1m

Thus, B is your answer

You might be interested in
Which scientist described an atom made of a solid positively charged substance with electrons dispersed throughout it?.
swat32

The scientist that described an atom made a solid positively charged substance with electrons dispersed throughout it was: Ernest Rutherford

In 1911 Ernest Rutherford proposed his atomic model in which he considered the atom as a positively, densely charged center called a nucleus in which the electrons circulate around the core with a negative charge.

<h3>What is an atom?</h3>

The atom is the smallest part of the composition of matter, it is indivisible and is composed of a nucleus that has protons and neutrons, and around the nucleus there are the electrons.

Learn more about the atom at: brainly.com/question/17545314

#SPJ4

3 0
2 years ago
Which phrase best describes wave motion?
Fittoniya [83]
I think the correct answer from the choices listed above is option A. Wave motion is a  movement of energy through space or a medium . Some waves are visible light waves, heat waves, sound waves and the like. Hope this answers the question.
6 0
3 years ago
A battery supplies 0.75 A to three resistors connected in parallel. The current through the first resistor is 0.24 A and the cur
Anastasy [175]
Total current flow in circuit=0.75
Current flow through third resistor=0.75-(0.24+0.22)
=0.29
7 0
3 years ago
A boat heads due North for 3.00 km to reach a red buoy. It then changes direction and heads in a direction of 30.0 degrees South
Helga [31]

Position of B :  

x = 4.66*cos 30 = 4.036  

y = 3-4.66*sin 30 = 3-2.33 = 0.67  

BC = √y^2+(x-1)^2 = √0.67^2+3.036^2 = 3.109  

heading = arctan y/(x-1) = arctan 0.67/(3.036) = 12.44° south of west

hope this helps :)

6 0
3 years ago
The normal force always points ____ to the two surfaces in contact.
shepuryov [24]

Answer:

A..................

6 0
3 years ago
Other questions:
  • Two blocks, with masses m and 3m , are attached to the ends of a string with negligible mass that passes over a pulley, as shown
    7·1 answer
  • A tuba may be treated like a tube closed at one end. If a tuba has a fundamental frequency of 88.4 Hz, determine the first three
    14·1 answer
  • Explain how rock D is the best rock
    5·1 answer
  • How are solution useful for society
    9·2 answers
  • Which expression can be used to calculate centripetal acceleration?
    10·1 answer
  • Oceanographers use submerged sonar systems, towed by a cable from a ship, to map the ocean floor. In addition to their downward
    10·1 answer
  • A thin film of oil rests on an inclined plane
    15·1 answer
  • A 65kg has the weight force of
    9·1 answer
  • A truck accelerates on a highway from rest to 216 m/s in 10s. What is the magnitude of acceleration?
    7·1 answer
  • Lets see how many go her just for the money
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!