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
lara [203]
3 years ago
9

You are holding a 1 kg rock and standing at the top of a cliff. You drop the rock off the cliff and it falls a distance 10 m. In

this problem, you can ignore air resistance.
What is the change in the kinetic energy of the rock as it falls that distance?
Physics
1 answer:
vfiekz [6]3 years ago
7 0

Answer:

98J

Explanation:

Given that the mass of the rock m=1kg, the height =10m and we know that gravitational force is g=9.8N/kg.

Change in kinetic energy  happens when the initial potential energy at rest is converted into Kinetic energy as:

\bigtriangleup KE=\bigtriangleup mgh\\\\=1kg\times 9.8\times10m\\\\=98J

Hence, the change in kinetic energy of the rock is 98J

You might be interested in
How does air pressure change with altitude?
charle [14.2K]
Air pressure changes with altitude because of issues related to gravity. Molecules have more weight the closer they are to the Earth and more of them move to lower elevations as a result; this causes increased pressure because there are more molecules in number and proximity. Conversely, air at higher elevations has less weight, but also forces pressure on those layers below it, resulting in the molecules closer to the Earth supporting more weight, increasing the pressure
3 0
3 years ago
It takes 6400 years for one gram of radium to decay away to only 1/16 (one-sixteenth) of a gram. The half-life of radium is
Vsevolod [243]
1/16........................................
4 0
3 years ago
If you are describing the displacement of an object with respect to a reference point, you should use
Leya [2.2K]
You should use B. a vector
6 0
3 years ago
A person with a mass of 40 kg is sitting on a box. What is the value of the normal force
VMariaS [17]

normal force=mass*gravitational force

normal force=40*0

normal force=40

8 0
2 years ago
A seesaw has an irregularly distributed mass of 30 kg, a length of 3.0 m, and a fulcrum beneath its midpoint. It is balanced whe
gladu [14]

Answer:

x = 0.9 m

Explanation:

For this exercise we must use the rotational equilibrium relation, we will assume that the counterclockwise rotations are positive

          ∑ τ = 0

          60 1.5 - 78 1.5 + 30 x = 0

where x is measured from the left side of the fulcrum

           90 - 117 + 30 x = 0

           x = 27/30

           x = 0.9 m       

In summary the center of mass is on the side of the lightest weight x = 0.9 m

4 0
3 years ago
Other questions:
  • A balloon holds 5.00 mol of a mono-atomic gas at a temperature of 5.00oC and at a pressure of 1.20 atm. The gas isothermally abs
    10·1 answer
  • A 12-inch object is placed 30 inches in front of a plane mirror. A ray of light from the object strikes the mirror at a 45-degre
    9·2 answers
  • What is the acceleration?
    7·1 answer
  • What are two results of animal regeneration?
    12·2 answers
  • The reed switch is placed between the poles of the strong permanent magnet.
    14·1 answer
  • Please i need answer ASAP... Please guys
    6·1 answer
  • a bottle lying on the windowsill falls off and takes 4.95 seconds to reach the ground. the distance from the windowsill to the g
    10·2 answers
  • Can someone help me??? PLZ. ASAP. TODAY!!!!! Only number 1<br>#1
    6·1 answer
  • Use the "Force applied" slider to set the force applied on the elephant to somewhere in the middle of the range. After you have
    13·1 answer
  • What is the outcome of a star that runs out of hydrogen
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!