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
Arisa [49]
3 years ago
15

An object that has kinetic energy must what ?

Physics
1 answer:
11Alexandr11 [23.1K]3 years ago
4 0

An object that has kinetic energy must be <em>moving</em>.

The formula for an object's kinetic energy is

KE = (1/2) · (the object's mass) · <u><em>(the object's speed)²</em></u>

As you can see from the formula, if the object has no speed, then its kinetic energy is zero.  That's why kinetic energy is usually called the "energy of motion", and if an object HAS kinetic energy, then that tells you right away that it must be moving.

You might be interested in
ListenA bicycle and its rider have a combined mass of 80. kilograms and a speed of 6.0 meters per second. What is the magnitude
Setler [38]

Answer:

a) 1.2\times 10^2\ N

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

a = Acceleration

v=u+at\\\Rightarrow a=\frac{v-u}{t}\\\Rightarrow a=\frac{0-6}{4}\\\Rightarrow a=-1.5\ m/s^2

The acceleration of the bicycle and rider is -1.5 m/s²

Force

F=ma\\\Rightarrow F=80\times -1.5\\\Rightarrow F=-120\ N=-1.2\times 10^2\ N

The magnitude of the average force needed to bring the bicycle and its rider to a stop is 1.2\times 10^2\ N

3 0
3 years ago
The narrator of a story
34kurt
The answer is d! I’m happy to help :)
7 0
3 years ago
Read 2 more answers
Un auto de 2,300 kg está estacionado sobre una rampa inclinada 26.0°. Obtenga la tensión en la cadena.
Natasha_Volkova [10]

Answer:

T = mgsinθ = 2300(9.8)sin26.0 = 9880.88 ≈ 9900 N

Explanation:

8 0
3 years ago
For every action, there is an equal and opposite reaction.
KiRa [710]

Answer:

This is newton's 3rd law

Explanation:

3 0
3 years ago
A spaceship approaches the earth with a speed 0.50c. A passenger in the spaceship measures his heartbeat as 9- beats per minute.
JulijaS [17]

Answer:

D) 61 beats per minute

Explanation:

5 0
3 years ago
Other questions:
  • What is the core concept of personality
    10·2 answers
  • At one particular moment, a 19.0 kg toboggan is moving over a horizontal surface of snow at 4.00 m/s. After 7.00 s have elapsed,
    8·1 answer
  • if the coolant in a refrigerator was not compressed back into a liquid after it flowed through the refrigerator what would happe
    7·2 answers
  • In Ørsted’s observation, the current-carrying wire acted like a
    5·2 answers
  • I need help. What is the correct answer A or B or C or D?
    14·1 answer
  • A 12.0N force with a fixed orientation does work on a
    12·1 answer
  • What are the three types of bones cells types and what are their function​
    11·1 answer
  • If a ball is thrown up at an initial speed of 40. m/s, how many seconds does it take to reach the top of its path?
    5·1 answer
  • An 84% efficient single pulley is used to lift a 230 kg piano 3.5 m. How much work must be input?
    10·1 answer
  • Ysical Science A
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!