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
a_sh-v [17]
3 years ago
6

You drop a rock off the top of a building. It takes 4.5 s to hit the ground. How tall is

Physics
1 answer:
madam [21]3 years ago
4 0
Since the rock as been dropped off the building you can assume that initial velocity equals 0m/s.

t=4.5s
acceleration due to gravity=9.8m/s^2

s=ut+1/2at^2

Since u=0, s=1/2at^2

s=1/2(9.8)(4.5)^
s=99.225m
You might be interested in
Please help me with this! :)
Bingel [31]
I can answer it in the comments, but can i ask what i’m supposed to do exactly? i remember learning about this stuff but i need the instructions.
8 0
2 years ago
Explain the relationship between magnetic fields and magnetic force.
andriy [413]

Answer:

Magnetic field is the strength of magnetism created by a magnet, whereas the magnetic force is the force due to two magnetic objects. The concepts of magnetic field and magnetic force are widely used in fields such as classical mechanics, electromagnetic theory, field theory and various other applications.

Explanation:

3 0
3 years ago
Diferencia entre transferencia y transformación de energía. Da ejemplos de cada caso.
Firdavs [7]

Answer:

La transformación de energía es un proceso en el que la energía se intercambia entre un sistema y el medio ambiente en al menos dos formas de energía diferentes entre sí. Por ejemplo, un panel solar convierte la energía lumínica en energía eléctrica.

En cambio, en la transferencia de energía, esta no cambia su forma sino que es transmitida de un cuerpo a otro. El ejemplo más claro es el de la fogata, que transmite calor al medio ambiente a través de radiación.

6 0
3 years ago
AP physics Will give brainliest to correct answer.
rjkz [21]

Answer:

the 4th one

Explanation:

6 0
3 years ago
Read 2 more answers
A woman living in a third-story apartment is moving out. Rather than carrying everything down the stairs, she decides to pack he
Flura [38]

Answer:

T = 480.2N

Explanation:

In order to find the required force, you take into account that the sum of forces must be equal to zero if the object has a constant speed.

The forces on the boxes are:

T-Mg=0      (1)

T: tension of the rope

M: mass of the boxes 0= 49kg

g: gravitational acceleration = 9.8m/s^2

The pulley is frictionless, then, you can assume that the tension of the rope T, is equal to the force that the woman makes.

By using the equation (1) you obtain:

T=Mg=(49kg)(9.8m/s^2)=480.2N

The woman needs to pull the rope at 480.2N

8 0
3 years ago
Other questions:
  • The distance between two cities is 185miles.Express the distance in kilometers.
    12·1 answer
  • Which characteristics can be used to differentiate star systems? Check all that apply.
    13·2 answers
  • The earth travels around the sun once a year in an approximately circular orbit whose radius is 1.50x10^11 m. From this data det
    13·1 answer
  • anice is watching her granddaughter drive a Barbie Jeep with a 6 V battery and an electric motor with 5 ohm of resistance. How m
    13·2 answers
  • After a car accident, the skid marks for one car measured 190 feet. Use the formula s = √ 24 d , where d represents the length o
    8·1 answer
  • According to the kinetic theory of gas particles, when do gas particles have some type of force between them?
    7·2 answers
  • Are stained glass windows transparent, opaque or translucent
    11·1 answer
  • Talking to adults can be intimidating and uncomfortable if you do not yet feel like one. However, learning how to effectivelycom
    10·1 answer
  • What else is produced when sodium carbonate decomposes
    7·1 answer
  • #1. What, roughly, is the percent uncertainty in
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!