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3 years ago

A motorbike travels 100m in 2.5 seconds. What is its speed?

Physics

1 answer:

lora16 [44]3 years ago

4 0

Answer:

The motorbike is traveling at 40 m/s

Explanation:

100m over 2.5 seconds or 100/2.5 is 40 m/s

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Which of the following choices is a single-replacement reaction? A. 2K + Br2 2KBr B. 2H2 + O2 2H2O C. Mg + FeO Fe + MgO D. C + 2

Otrada [13]

A single replacement reaction occurs when two different cations switch places to combine with the same anion. One element forms a compound while another element is released from the compound. In a single replacement reaction, or single displacement reaction, a single<span> uncombined element replaces another in a compound.

So you're answer is probably c.
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3 years ago

What are 3 examples of elastic collisions?

Andre45 [30]

QUICK ANSWER

The collision between two gas molecules or billiard balls can be approximated as elastic collisions. Elastic collisions are exchanges of kinetic energy between two bodies having different reference frames in which the total kinetic energy of the two bodies after collision is equal to the energy before collision.'

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3 years ago

What happen when a hurricane crosses over land

Rus_ich [418]

It loses it's fuel supply from the water and begins to weaken

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4 years ago

Does sound travel faster in a warm room or a cold room? Explain ur answer ?

Solnce55 [7]

Warm because everything travels faster in warm weather

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3 years ago

how long would it take for a radio wave sent from a space satellite circling mars to reach Earth? Assume that radio waves (a for

kati45 [8]

Answer:

3 Minutes 2 seconds to 22 minutes 16 seconds

Explanation:

Lets assume the Mars to be at the closest distance to Earth. This distance (D) = 54.6 Million km

The signal travels at the speed of light, so speed of the signal (V) = 300000 km/s

So, the time (T) taken by the radio wave to reach Earth from Mars will be,

$T = \frac{D}{V}$

$T = \frac{54600000}{300000}$

Thus, T = 182 Sec = 3 Minutes 2 seconds.

The radio wave will take minimum 03 Minutes 02 seconds to reach Earth. Here is should be noted that the distance between the two planets keep on changing as they revolve around the Sun. There will come a point when Mars is farthest from Earth and the distance (D) will be 401 Million km. Then, the time will change to ,

$T = \frac{401000000}{300000}$

T = 1336.67 sec = 22.27 Minutes.

So the maximum time will be 22 minutes 16 seconds.

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3 years ago