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Vesna [10]
3 years ago
11

One car travels 56 meters due east in 2.0 seconds, and a second car travels 84 meters due west in 3.0 seconds. During their peri

ods of travel, the cars definitely had the same
They have narrowed down to two answer choices. Using your knowledge, help them decide which answer choice is correct. Explain your reasoning.

average speed
average velocity
Physics
1 answer:
Lubov Fominskaja [6]3 years ago
5 0

Answer:

  average speed

Explanation:

The directions were different, so the velocities could not be the same.

However, the magnitude of the velocity (speed) was 56/2 = 28 m/s for the first car, and 84/3 = 28 m/s for the second car. These<em> average speeds are the same</em>.

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A description of a phenomenon
Shalnov [3]

Answer:

A phenomenon is an extraordinary occurrence or circumstance. ... Like many words with Greek roots, phenomenon started out as a science term. Scientists used it (and still do) to describe any event or fact that could be observed, amazing or not.

Explanation:

도움이 되기를 바랍니다.... 미리 환영합니다.

6 0
3 years ago
Read 2 more answers
A golf ball traveling 3m/s to the right collides in a head-on collision with a stationary bowling ball in a friction-free enviro
Vladimir79 [104]

Answer: equal to 3 m/s

Explanation:

Speed of golf ball will be equal to 3 m/s because in Perfect Elastic Collision Energy is conserved .

So speed of golf ball will be same in order to Satisfy

Initial Kinetic Energy =Final Kinetic Energy

Considering Bowling ball remains at rest after collision other wise some energy will also be acquired by bowling ball which automatically decreases the amount of Kinetic Energy of golf ball resulting its speed to decrease by some extent.  

3 0
4 years ago
A toroidal coil of N turns has a central radius b and a square cross section of side a. Find its self-inductance.
Xelga [282]

Answer:

L = \frac{\mu_0 N^2 (a^2)}{2\pi b}

Explanation:

As we know that magnetic field due to torroid is given as

B = \frac{\mu_0 N i}{2\pi b}

this is approximately constant magnetic field along the axis of the torroid

now the flux linked with one coil of the torroid is given as

\phi = B.A

\phi = \frac{\mu_0 N i}{2\pi b}(a^2)

now total flux of N number of coils is given as

\phi_{total} = \frac{\mu_0 N^2 i(a^2)}{2\pi b}

now we know that self inductance is the property of coil in which flux of the coil will link with the current in the coil

So we know that

L = \frac{\phi}{i}

L = \frac{\mu_0 N^2 (a^2)}{2\pi b}

3 0
3 years ago
How much is the force of gravity on Mr.Arbo if his mass is 74.8kg?
PtichkaEL [24]

Answer:

Force due to gravity in earth = 74.8*9.8 = 733.04 N

Explanation:

We have mass of Mr. Arbo = 74.8 kg

Force of gravity = Weight = Mass * Acceleration due to gravity value of planet.

In earth acceleration due to gravity value = 9.8m/s^2

So force due to gravity in earth = 74.8*9.8 = 733.04 N

4 0
4 years ago
When an object’s velocity changes this causes __________ of the object.
kherson [118]
Acceleration of the objesct to speed up
6 0
3 years ago
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