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Gnoma [55]
3 years ago
14

A bicycle traveled 150 meters west from point A to point B. Then it took the same route and came back to point A. It took a tota

l of 2 minutes for the bicycle to return to point A. What is the average speed and average velocity of the bicycle?
Physics
2 answers:
Zinaida [17]3 years ago
8 0

Answer:

speed=distance÷time

150÷0. 033

Evgesh-ka [11]3 years ago
7 0

Answer:

2.5 m/s

0 m/s

Explanation:

Average speed is distance over time.

Average velocity is displacement over time.

The bicycle travels 150 meters from A to B, then 150 meters from B to A.  So the distance is 300 meters and the displacement is 0 m.

s = 300 m / 120 s = 2.5 m/s

v = 0 m / 120 s = 0 m/s

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kotykmax [81]

Answer:

they both produce energy

Explanation:

7 0
3 years ago
What is the index of refraction of a material in which the speed of light is 7.50% slower than the speed of light in vacuum?
Inessa [10]

Answer:

The value is n = 1.081

Explanation:

From the question we are told that

   The speed of in a vacuum is c = 3.0 *10^{8} \  m/s

    The speed of light in the material is  v  =  c -0.075c = 0.925 c =  0.925 * 3.0*10^{8}  = 2.775 *10^{8} \ m/s

   Generally the reflection of the material is mathematically represented as

             n = \frac{c}{v}

=>    n = \frac{3.0*10^{8}}{2.775 *10^{8}}

=>    n = 1.081

8 0
3 years ago
Find the mass if the force is 18 n and the acceleration is 2 m/s/s
Mazyrski [523]

Answer:

<h2>The answer is 9 kg</h2>

Explanation:

The mass of an object can be found by using the formula

m =  \frac{f}{a}  \\

f is the force

a is the acceleration

From the question we have

m =  \frac{18}{2}  \\

We have the final answer as

<h3>9 kg</h3>

Hope this helps you

4 0
2 years ago
19. Determine the final state and its temperature when 150.0 kJ of heat are added to 50.0 g of water at 20 ºC. (Specific heat of
8090 [49]

The amount of energy to reach the boiling point is 50*80*4.184 J=16,736J. To pass the boiling point, 40.79*\frac{50}{18.02}kJ=113,180J are necessary (18.02 is the molar mass of water). This means that 150kJ-113.180kJ-16.736kJ=20,084J are left. This allows the steam to heat another \frac{20,084}{50*1.99}=201.8^{\circ}C. Therefore, it ends as steam at temperature 100^{\circ}C+201.8^{\circ}C=301.8^{\circ}C

6 0
3 years ago
Roshan makes the table below to describe how to draw a ray diagram for a convex lens.
Mariana [72]

May you please provide a picture of the table, so that I can see his error?  Otherwise I can not solve.

4 0
3 years ago
Read 2 more answers
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