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
-Dominant- [34]
3 years ago
7

Professional baseball pitchers deliver pitches that can reach the blazing speed of 100 mph (miles per hour). A local team has dr

afted an up-and-coming, left-handed pitcher who can consistently pitch at 42.91 m/s (96.00 mph) . Assuming a pitched ball has a mass of 0.1434 kg and has this speed just before a batter makes contact with it, how much kinetic energy does the ball have?
Physics
1 answer:
maria [59]3 years ago
5 0

Answer: 132.02 J

Explanation:

By definition, the kinetic energy is written as follows:

KE = 1/2 m v²

In our question, we know from the question, the following information:

m = 0.1434 Kg

v= 42.91 m/s

Replacing in the equation for KE, we have:

KE = 1/2 . 0.1434 Kg. (42.91)² m²/s² ⇒ KE = 132.02 N. m = 132.02 J

You might be interested in
a block with length 1.5m width 1m height 0.5m and mass 300kg lays on the table.what is the pressure at the bottom surface of the
Nesterboy [21]

Answer:

your answer will be 320kg that would be the pressure at the bottom surface of the block

6 0
2 years ago
A flywheel with radius of 0.400 mm starts from rest and accelerates with a constant angular acceleration of 0.600 rad/s2rad/s2.
charle [14.2K]

Answer: 0.00024\ m/s^2

Explanation:

Given

Radius of flywheel is r=0.4\ mm

Angular acceleration \alpha=0.6\ rad/s^2

For no change in radius, tangential acceleration is  given as

\Rightarrow a_t=a\lpha \times r

Insert the values

\Rightarrow a_t=0.6\times 0.4\times 10^{-3}\ m/s^2\\\Rightarrow a_t=2.4\times 10^{-4}\ m/s^2\ \text{or}\ 0.00024\ m/s^2

5 0
3 years ago
which word means "the history of life in the geologic past as indicated by the imprints or remains of living things?
love history [14]
The history of life in the geologic past as indicated by the imprints or remains of living thing is called FOSSIL RECORD.<span> It is the evolution that unfolded over trillion of years as natural and environmental interacts based on the natural selection. The fossil record is among the most popular evidences of evolution. It shows the way of living, the type of people, the survival struggles of the ancient people in the old times. All these types of remains are recorded that makes up the fossil record. </span>
4 0
3 years ago
If your heart is beating at 76 beats per minute what is the frequency of your heart's oscillations
PSYCHO15rus [73]
That would be a frequency of 1.2666... beats per second. This can be phrased as your heart beats at 1.27 Hz.
4 0
3 years ago
Which tool is a wheel and axle?
Anton [14]
A steering wheel, a wrench, a screwdriver, and the back wheel of a bike are all examples of tools with a wheel and axle.
5 0
3 years ago
Read 2 more answers
Other questions:
  • Please answer this question
    9·2 answers
  • Two students push a heavy crate across the floor. John pushes with a force of 185 N due east and Joan pushes with a force of 165
    14·1 answer
  • Why don’t we feel the gravitational pull of objects around us?
    14·1 answer
  • Two positive charged particles will ?
    5·2 answers
  • The formula v = √2.5r models the maximum safe speed, v, in miles per hour, at which a car can travel on a curved road with radiu
    7·1 answer
  • How radio wave carry information?​
    12·1 answer
  • Using average rates of money growth and inflation in the United States over many decades, Friedman and Schwartz found that decad
    13·1 answer
  • Calculate ine gravitational potential energy of the ball using pe=m×g×h.(use g=9.8 n/kg)
    15·1 answer
  • Which type of energy is water held back by a dam?
    6·2 answers
  • A thermionic tube with only a cathode and an anode is called?​
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!