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
dalvyx [7]
3 years ago
10

A puppy weighing 3 kilograms races through the dog park. if she slows from a speed of 2 meters/second to 1 meter/second, what wi

ll happen to her kinetic energy? use the kinetic energy equation.
a.her kinetic energy decreases to 1.5 j
b.her kinetic energy increases to 1.5 j
c.her kinetic energy remains unchanged
d.her kinetic energy decreases to 1 j.
Physics
2 answers:
Ne4ueva [31]3 years ago
6 0
Your answer is A. If velocity decreases, your kinetic energy would also decrease.
sdas [7]3 years ago
5 0

Answer:The correct answer is option (a).

Explanation:

Mass of the puppy,m = 3 kg

Kinetic energy of the puppy when it was running with speed of 2 m/s:

K.E=\frac{1}{2}mv^2=\frac{1}{2}\times 3kg\times (2 m/s)^2=6 Joules

Kinetic energy of the puppy when it was running with speed of 1 m/s:

K.E'=\frac{1}{2}mv^2=\frac{1}{2}\times 3kg\times (1 m/s)^2=1.5 Joules

When the puppy was running at the speed f 1 m/s her kinetic energy reduced to 1.5 Joules.

Hence, correct answer is option (a).

You might be interested in
A tea kettle is boiling on the stove, and all of a sudden the whistle in the spout of the kettle starts shrieking. Steam rising
fenix001 [56]

Answer:

The steam represents evaporation.

Explanation:

4 0
2 years ago
Read 2 more answers
The area of the piston to the master cylinder in a hydraulic braking system of a car is 0.6 square inches. If a force of 5.6 lb
balu736 [363]

Answer:

16.8 lb is the force on the brake pad of one wheel.

Explanation:

Force applied on the piston = F_1=5.6 lb

Area of the piston = A_1=0.6 inches^2

Force applied on the brakes = F_2

Area of the brakes = A_2=1.8 inches^2

Applying Pascal's law: 'For an incompressible fluid pressure at one surface is equal to the pressure at other surface'.

\frac{F_1}{A_2}=\frac{F_2}{A_2}

F_2=\frac{5.6 lb\times 1.8 inhes^2}{0.6 inches^2}=16.8 lb

16.8 lb is the force on the brake pad of one wheel.

5 0
3 years ago
In order to create a charged object, you need to ________.
Brums [2.3K]
In order to create a charged object you need to transfer electrons either away or to the object by induction, conduction, or friction

Induction is without contact(like bringing a charged object to a electroscope charges the leaves at the bottom)
Conduction is with contact(like the previous answer, wore touching transfers the charge from a source to the object)
Friction(rubbing a balloon on wool)

7 0
2 years ago
Instructions
RideAnS [48]
A group of students toured a limestone cave in northwest Georgia.
Which of these best explains how the limestone caves in Georgia were formed?
A. Plant roots split the rock.

B. Acidic water dissolved the rock.

C. Animals burrowed into the rock.

D. Ice formed and broke up the rock.
7 0
2 years ago
Use the terms "force", "weight", "mass", and "inertia" to explain why it is easier to tackle a 220 lb football player than a 288
Tomtit [17]
<span><u>Answer </u>
The mass of 220 lb football has less than 288 lb football. So, it will be easier to move it since it will require less force. The heavy football will have a bigger momentum. Since 288 lb has more weight than 220 lb, it will have bigger inertia making it difficult for the players to stop it.
This makes it easier to tackle 220 lb football than 288 lb football. 
</span>
7 0
3 years ago
Read 2 more answers
Other questions:
  • Two identical satellites are in orbit about the earth. One orbit has a radius r and the other 2r. The centripetal force on the s
    5·1 answer
  • Can sum1 pls give me the answer to number 3
    12·1 answer
  • The one invention that has made many complex machines possible is the invention of the:
    11·1 answer
  • The Greek philosopher Democritus coined what word for a tiny piece of matter that cannot be divided?
    6·2 answers
  • Which one of the following types of microscope gives the highest amount of magnification?
    11·2 answers
  • A car and a truck are moving next to each other on the highway. The truck has a mass of 910 kg and the car’s mass is 227 kg. IF
    11·1 answer
  • How are longitudinal and transverse waves different?
    8·1 answer
  • A 0.141 kg pinewood derby car is moving 1.33 m/s . What is its momentum?
    8·1 answer
  • Which two characteristics are important for soil or land that is used for farming ?
    6·2 answers
  • A man walks 30 m to the west, then 5 m to the east in 45 seconds.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!