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
sammy [17]
3 years ago
9

A track star runs 100 meters in 10 seconds. What is the star's average speed?

Physics
2 answers:
Ksju [112]3 years ago
8 0

Answer:

10m/s

Explanation:

Maslowich3 years ago
6 0

Answer: 10

Explanation: Because, 10*10= 100 or 100/10=10

You might be interested in
Which of the following statements is/are true? Check all that apply. A nonconservative force permits a two-way conversion betwee
saul85 [17]

Answer:

A conservative force permits a two-way conversion between kinetic and potential energies.

The work done by a nonconservative force depends on the path taken.

A potential energy function can be specified for a conservative force.

Explanation:

A conservative force is defined as a force whose work done does not depend on the path taken, but only on the initial and final position of motion.

This means that for a conservative force, it is possible to defined a potential energy function U which depends only on the position of the object. An example of conservative force is gravity: the gravitational potential energy of an object, in fact, depends only on its position in the field, not on the path taken.

This behaviour also implies that when an object moves from A to B and then back from B to A, the potential energy gained (or lost) moving from A to B is lost (or re-gained) when moving from B to A. This means that the total mechanical energy (sum of kinetic energy and potential energy) of the object is conserved, and therefore there is a constant conversion between potential and kinetic energy during the motion.

A non-conservative force instead does not show this properties, as the work done by it depends on the path taken, and therefore it is not possible to define a potential energy function. An example of non-conservative force is friction.

According to what we wrote above, therefore, the only correct statements are:

A conservative force permits a two-way conversion between kinetic and potential energies.

The work done by a nonconservative force depends on the path taken.

A potential energy function can be specified for a conservative force.

3 0
3 years ago
Two identical stones, A and B, are thrown from a cliff from the same height and with the same initial speed. Stone A is thrown v
Taya2010 [7]

Answer:

Option A

Explanation:

This can be explained based on the conservation of energy.

The total mechanical energy of the system remain constant in the absence of any external force. Also, the total mechanical energy of the system is the sum of the potential energy and the kinetic energy associated with the system.

In case of two stones thrown from a cliff one vertically downwards the other vertically upwards, the overall gravitational potential energy remain same for the two stones as the displacement of the stones is same.

Therefore the kinetic energy and hence the speed of the two stones should also be same in order for the mechanical energy to remain conserved.

5 0
3 years ago
Read 2 more answers
True or False: Speed is a vector quantity.
Travka [436]

Answer:

it's false coz

Speed is a scalar quantity.

3 0
3 years ago
Read 2 more answers
It is vital to keep in mind that breaches are entirely concerned with data. No matter what physical damage a device incurs, data
Ierofanga [76]

Answer:

TRUE

Explanation:

We currently live in the digital age, where almost everything is digitized, including strategic information. Thus, each individual and especially corporations that have sensitive data must use protection mechanisms against cyber attacks. One of the measures most recommended by experts is encryption, which consists of a set of rules that aims to encode data information so that only the sender and the receiver can decipher it.

5 0
3 years ago
The atomic number of an element is found by?
azamat

Calculate the number of neutrons. Now you know that atomic number = number of protons, and mass number = number of protons + number of neutrons. To find the number of neutrons in an element, subtract the atomic number from the mass number.

6 0
3 years ago
Read 2 more answers
Other questions:
  • BWhat Do You Get When You Multiply An Object's mass times the acceleration?
    13·1 answer
  • The Hubble Space Telescope orbits the Earth at an approximate altitude of 612 km. Its mass is 11,100 kg and the mass of the Eart
    6·1 answer
  • Please need help on this
    8·1 answer
  • In 1949, an automobile manufacturing company introduced a sports car (the "Model A") which could accelerate from 0 to speed v in
    5·1 answer
  • How does the current values in and out of the battery compare to the sum of currents going through the light bulbs?
    11·1 answer
  • A 37 N object is lifted to a height of 3 meters, What is the potential energy of this object?
    7·1 answer
  • 7. A force of 100 N acting on a body gives it a speed of 200 m/s in 2
    10·2 answers
  • What affect does a doubling of the net force have upon the acceleration of the object?
    8·2 answers
  • HELP ME PLEASE!!!!!!!!!
    14·1 answer
  • The rate of change of momentum of a body free falling under gravity is equal to its? A. Velocity B. kinetic energy C. power D. w
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!