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
Oksana_A [137]
3 years ago
9

A force does 128-J of work on a 4-kg cart. What mus be the velocity of the cart?

Physics
1 answer:
LenKa [72]3 years ago
4 0

Answer:

v = 8[m/s]

Explanation:

In this case, the work that is exerted on the cart is the kinetic energy that allows the movement, so we can use the following equation of kinetic energy.

E_{kin}=Work\\E_{kin}=\frac{1}{2} *m*v^{2}

Now replacing:

128=0.5*4*v^{2} \\v=\sqrt{64} \\v=8[m/s]

You might be interested in
Jack is planning an experiment to see how temperature can affect the reproduction rate of a certain species of bacteria. Jack is
stealth61 [152]
<span>The answer is C. temperature, light level, species of bacteria. All three variables are considerations regarding the reproduction rate of the bacteria. The other three answer choices can be eliminated easily because they each contain at least one irrelevant variable. In particular, all three contain a variable that makes reference to Jack's personal characteristics. These do not have any impact on the experiment and readily stand out to disqualify the entire answer choice.</span>
6 0
4 years ago
Read 2 more answers
Any example of acceleration related to human body??? <br> answer quickly plz :)
Hitman42 [59]

Answer:

Acceleration stress, physiological changes that occur in the human body in motion as a result of rapid increase of speed. ... A force of 3 g, for example, is equivalent to an acceleration three times that of a body falling near Earth.

4 0
3 years ago
Which health risk is acculipble to workers in the retail sector?
grigory [225]

Answer:

D. injuries associated with lifting loads

Explanation:

The retail industry or store is the industry that involves the handling of their goods directly from the manufacturer and delivers goods to the consumer.

<em>The health risk is acculipble to workers in the retail sector is injuries associated with lifting loads because while manually handling heavy or awkward sized objects, which are common in the retail industry causes strains and sprains. </em>

So, the common activity in the retail store is lifting loads which leads to common injuries such as strains and sprains.

Hence, the correct answer is "D. injuries associated with lifting loads".

8 0
3 years ago
An object traveling at a 5.0 m/s East has a mass of 4.0 kg. What is the magnitude of the object’s momentum?
DaniilM [7]

Answer:

20 kgm/s

Explanation:

Momentum=mass * velocity

Momentum=4 *5= 20kgm/s

6 0
4 years ago
PLEASE HELP!!!! WILL GIVE BRAINLIEST!!! WORTH 20 PTS!!!!!
Leona [35]

Answer:

Explanation:

These tectonic plates rest upon the convecting mantle, which causes them to move. The movements of these plates can account for noticeable geologic events such as earthquakes, volcanic eruptions, and more subtle yet sublime events, like the building of mountains.

6 0
3 years ago
Other questions:
  • A boy starting from rest, slides down a snowy hill on a sled. He travels 174.19 m to the bottom of the hill. He accelerates
    15·1 answer
  • WHAT IS THE UNBALANCED FORCE THAT SLOWS DOWN SLIDING DESKS AND MOVING CARS
    10·2 answers
  • calculate the acceleration due to gravity on the Moon. The Moon's radius is 1.74×106m1.74×106m and its mass is 7.35×1022kg7.35×1
    8·1 answer
  • Scientists generally agree that Earth is getting warmer due to what's called the greenhouse effect. A greenhouse used for plants
    13·1 answer
  • A hailstone traveling with a velocity of 43 meters/second comes to a virtual stop 0.28 seconds after hitting water. What is the
    10·2 answers
  • Which of the following is an advantage of asexual reproduction compared to sexual reproduction?
    14·2 answers
  • A population of birds walks along the shores of a swampy area eating small crabs. Climatic changes cause the water level in the
    11·1 answer
  • Which tricks do you use to reduce pressure in everyday activities? Which tricks do you use to reduce pressure in everyday activi
    8·1 answer
  • Một chất điểm khối lượng m=200g chuyển
    7·1 answer
  • How large is the tension in a rope that is being used to accelerate a 100 kg box upward at 2m/s2?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!