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sineoko [7]
3 years ago
15

Alt ran 5 kilometers in 25 minutes, going eastward. What was his average velocity?

Physics
1 answer:
Firdavs [7]3 years ago
8 0
Velocity (v) is a vector quantity that includes the magnitude and the direction. The magnitude of the quantity is the quotient obtained in dividing the distance (d)  by the time (t). 
 
                                 v  = d / t

Substituting the known values, 
                  v = (5 km) / (25 minutes)  = (5000 m) / (1500 s) =3.33 m/s 

Therefore, Walt's velocity is 3.33 m/s due east. 
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The gravitational field on Saturn is 10.4 times its value on Earth.
nalin [4]

The weight of 100 kg mass on Saturn is 10,192 N.

The weight of 7.0 kg mass on Pluto is 2.01 N.

The given parameters;

  • <em>acceleration due to gravity, = 10.4g</em>
  • <em>mass of the Saturn, m = 100 kg</em>
  • <em>acceleration due to gravity on mercury, = 3.59 m/s²</em>

The weight of 100 kg mass on Saturn is calculated as follows;

W = mg

W = 100 x 10.4 x 9.8

W = 10,192 N

The weight of 7.0 kg mass on Pluto is calculated as follows;

W = 7 x 0.08 x 3.59

W = 2.01 N

Learn more here:brainly.com/question/18603430

5 0
3 years ago
A girl is running toward the front of a train at 10 m/s. If the train is going 75 m/s on the Southbound tracks, what is the spee
dimulka [17.4K]
We can take as positive direction the direction of the train, and as negative direction the direction of the girl. The speed of the train relative to the girl will be given by the difference between the two velocities:
v' = v_t - v_g
which means
v'=75 m/s - (-10 m/s)=85 m/s
5 0
3 years ago
Read 2 more answers
a spacecraft that seems to be motionless in deep space is given some type of quick push. which statement describes what will hap
bogdanovich [222]

An applied force applied causes a body such as the spacecraft to move. The magnitude of the force determines the change in the velocity

What will happen to the spacecraft is given by option C. from among the possible question options.

C. The spacecraft will begin to move and it will continue moving until it is stopped by an equal and opposite force

Reason:

<em>The possible question options obtained from a similar question includes;</em>

<em>A. The spacecraft will move for some time then stop slowly</em>

<em>B. Air resistance will prevent the spacecraft from moving</em>

<em>C. The spacecraft will begin to move and the motion will continue until a force equal and opposite to the applied force stops it</em>

<em>D. The quick push will not cause the spacecraft to move, as a quick push works on Earth only</em>

The state of the space craft = Motionless

Location of the spacecraft = Deep space

Type of force applied = Quick push

The statement that describes what will happen = Required

Solution;

Let <em>F</em>, represent the force applied, and let Δt be the duration of the applied force, we have;

The impulse of the force, F × Δt = m·(v₂ - v₁)

Where;

m = The mass of the spacecraft

v₁ = The initial velocity of the spacecraft = 0

v₂ = Final velocity of the spacecraft

Plugging in v₁ = 0, gives;

F × Δt = m·v₂

The space craft is given a velocity, <em>v₂</em>, and according to Newton's First Law of Motion, it continues moving in a straight line until another force acts on it

Therefore, the correct option is option C. <u>The spacecraft will begin to move and the motion will continue until it is stopped by an equal and opposite force</u>

<u />

Learn more about Newton's First Law of Motion here:

brainly.com/question/20841616

8 0
3 years ago
Why will a change in velocity have a greater affect on KE than a change in mass?
Sever21 [200]

Answer: the answer is corect of what everone else said

Explanation:

5 0
3 years ago
Read 2 more answers
Using the periodic table, determine which element these characteristics MOST LIKELY describe.
Zepler [3.9K]

Answer: A) F

B) I

C) O

D) Na

Explanation: not sure if this is what ur asking for but those are the symbols

8 0
3 years ago
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