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
nataly862011 [7]
4 years ago
11

A ball having a mass of 0.20 kilograms is placed at a height of 3.25 meters. If it is dropped from this height, what will be the

kinetic energy of the ball
when it reaches 1.5 meters above the ground?
A.1.2 joules
B.2.2 joules
c.3.4 joules
D.3.6 joules
E.4.3 joules
Physics
2 answers:
tatiyna4 years ago
8 0

Answer:

Kinetic energy, KE = 3.43 Joules

Explanation:

It is given that,

Mass of the ball, m = 0.2 kg

Initially, it is placed at a height of 2.25 meters. We need to find the kinetic energy of the ball  when it reaches 1.5 meters above the ground. It can be calculated using the conservation of energy.

To find,

Kinetic energy of the ball when it reaches 1.5 meters above the ground

KE=PE=mg(h_2-h_1)

KE=0.2\ kg\times 9.8\ m/s^2(3.25-1.5)\ m

KE = 3.43 Joules

So, the kinetic energy of the ball is 3.43 joules.

Phantasy [73]4 years ago
3 0

Answer:

3.4 Joules

Explanation:

the KE= 1/2 mv^2

By the equation v^2  = u^2  + 2as

where v is the final velocity

u is the initial velocity=0

a is the acceleration=-9.81

s is the displacement = 3.25-1.5=1.75(downwards)=-1.75

v^2= 2(-9.81)(-1.75)

v^2=34.335

KE: 1/2(0.2)(34.335)

=3.4335

=3.4 Joules( rounded to 1 decimal places)

You might be interested in
A skier halfway between the top and bottom of a hill. Which statement best describes the skier?
Dvinal [7]

Answer: The skier has potential and kinetic energy.

Explanation: This is what I found from a different user on this website

5 0
4 years ago
How long did Skylab orbit the earth?
maria [59]

Answer:

for abt 36 seconds

Explanation: cuz thats how long it was

4 0
3 years ago
What happens when a resultant electric field exist in conductor​
klio [65]

Answer:

When an electric field exists in a conductor a current will flow.

This implies a voltage difference between two points on the conductor.

Electrostatics pertains to static charge distributions.

That means that an object such as a charged spherical conductor will be at the same potential (voltage) on both its outer and inner surfaces.

7 0
4 years ago
PLEASE ANSWER ASAP BEFORE MY TEACHER AND MY MOM KILLES ME PLEASE ASAP
Anastaziya [24]

Answer:

As you know, the denser objects have more weight per unit of volume, this will mean that the force that pulls down these objects is a bit larger.

This will mean that the denser objects will always go to the bottom.

This clearly implies that the red liquid, the one with one of the smaller densities, can not be at the bottom.

There are some cases where a liquid with a small density may become a lot denser as the temperature or pressure changes, and in a case like that, we could see the red liquid at the bottom, but for this case, there is no mention of changes in the temperature nor in the pressure, so this can be discarded.

The only thing that makes sense is that the red part at the bottom is the base of the tube, and has nothing to do with the red liquid.

6 0
3 years ago
Saatlemati
vodomira [7]

Answer:

what are u asking there isnt a question

3 0
3 years ago
Other questions:
  • "A toy airplane flies clockwise at a constant speed in a horizontal circle of radius 8.0 meters. The magnitude of the accelerati
    6·2 answers
  • Calculate the distance travelled by the van between 16.0s and 23.0s. Give your answer correct to 2 significant figures.
    12·1 answer
  • What happens to the Total Energy as the spring bounce?
    13·1 answer
  • Which part of the battery is electron enriched?
    12·2 answers
  • There are_____________ centimeters in 1 meter.
    8·2 answers
  • The hydrogen bond between two water molecules arises because water is
    6·1 answer
  • A student's tonsils become infected and she has them removed. What condition does she need to be careful of in the future?
    15·1 answer
  • A father is homo….zygou dominant for green eyes, the mother is heterozygous. How many of the offspring will have green eyes?
    11·1 answer
  • What is an amorphous solid?
    8·1 answer
  • If the coefficient of kinetic friction between tires and dry pavement is 0.93. What is the shortest distance in which you can st
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!