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]
3 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:
tatiyna3 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]3 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
If a leaf falls from a tree, has work been done on the leaf? Explain.
mihalych1998 [28]

Answer:

Hope this helps!

5 0
2 years ago
What two factors determine the amount of friction there will be between objects?
barxatty [35]

Answer:

the two factors are the mass of the objects and the coefficient of friction between them

Explanation:

internet :)

6 0
3 years ago
What are the three ways of answering a scientific question
My name is Ann [436]

Answer:

Let's start by understanding what exactly a scientific question is. A scientific question is a question that may lead to a hypothesis and help us in answering (or figuring out) the reason for some observation. A good scientific question has certain characteristics. It should have some answers (real answers), should be testable.

Here's examples of a few:

Why is that a star?

or

What is that star made of?

Hope this can lead you to the answer you're looking for at least!!

5 0
3 years ago
If a planet's orbital speed is 20 km/s when it's at its average distance from the sun which is most likely orbital speed when it
Alona [7]

Answer:25km/s

Explanation:

8 0
2 years ago
Can someone help me its really hard to do d is stuff​
Tasya [4]

Answer:

direction, speed

means the object is staying still, 0

newtons, N

the sum of all the forces acting on an object

Explanation:

3 0
3 years ago
Other questions:
  • There is a simple pattern for determining if a binary number is odd. what is it and why does this pattern occur
    12·2 answers
  • The lowest energy state of a quantized system is
    12·1 answer
  • a portable DVD player requires six 1.5-volt batteries to operate.if the resistance in the circuitis 7.2 ohms. what's the current
    14·1 answer
  • Nearly all physics problems will use the unit m/s^2 for acceleration. Explain why the seconds are squared. Why isn't the unit gi
    10·1 answer
  • Where is the near point of an eye for which a contact lens with a power of +2.55 diopters is prescribed?Where is the far point o
    14·1 answer
  • Should young children be treated as “little adults”? Based on what you have learned about development, do you think that is reas
    12·2 answers
  • Explain how the absorption of sound waves differs from the transmission of sound waves
    14·1 answer
  • I’ll give u BRAINLIEST PLEASE!! HURRY
    14·1 answer
  • How is the volume flow rate of water out of the tank, dVdt, related to the flow speed v ? Express your answer in terms of some,
    14·1 answer
  • The diagram below shows two bowling balls, A and B, each having a mass of 7.0 kg, placed 2.00 m apart between their centers.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!