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melisa1 [442]
2 years ago
11

A train accelerates steadily from 4.m.s.-1 to 20.m.s.-1 in 100 seconds​

Physics
1 answer:
kozerog [31]2 years ago
6 0

Answering question assuming that we need to calculate how far it will travel in a given time.

A train accelerates steadily from  4 m/s to 20 m/s in 100 seconds then it will travel 1200 m in a given time.

Given:

Initial velocity u = 4m/s

Final velocity  v = 20m/s

Time t = 100s

We need to find out the distance covered in given time.

Distance =?

For finding distance, we need to find acceleration first.

Here we can apply kinematic equations as acceleration is steady as given in question.

So applying the first kinematic equation to find acceleration first.

a = v-u/t

a = 20-4/100

a = 16/100

a = 0.16m/s²

Now applying second kinematic equation

S=ut+ 1/2at²

s = 4 x 100+ 1/2 x 0.16 x 100 x 100

s = 400 +  800 = 1200 m

Thus a train accelerates steadily from  4 m/s to 20 m/s in 100 seconds then it will travel 1200 m in a given time.

To learn more about the Kinematic equation application please click on the link brainly.com/question/26469691

#SPJ9

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Aluminum: Aluminum is a common component of sparklers.  It is used to produce silver and white flames and sparks.

Antimony: Antimony is used to create firework glitter effects.

Barium: Barium is used to create green colors in fireworks, and it can also help stabilize other volatile elements.

Calcium: Calcium is used to deepen firework colors. Calcium salts produce orange shades in the fireworks.

Carbon: Carbon is an important components of black powder, which is used as a propellant in fireworks. Carbon provides the fuel for a firework. Common forms include carbon black, sugar, or starch.

Chlorine: Chlorine is an important component of many oxidizers in fireworks. Several of the metal salts that produce colors contain chlorine.

Copper: Copper compounds produce blue shades in fireworks.

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Lithium: Lithium is a metal that is used to impart a red color to fireworks. Lithium carbonate, in particular, is a common colorant.

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Oxygen: Fireworks include oxidizers, which are substances that produce oxygen in order to support. The oxidizers are usually nitrates, chlorates, or perchlorates. Sometimes the same substance is used to provide oxygen and color.

Phosphorus: Phosphorus burns spontaneously in air and is also responsible for some glow-in-the-dark effects. It may be a component of a firework's fuel.

Potassium: Potassium helps to oxidize firework mixtures. Potassium nitrate, potassium chlorate, and potassium perchlorate are all important oxidizers.

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