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3 years ago

If a car increases its velocity from zero to 60 m/s in 10 seconds, its acceleration is

1 answer:

5 0

We know that a=vf_vi/t equals equation "a" . Where a is the acceleration of the body , vf is the final velocity , vi is the initial velocity and t is equal to time . Since vi equals o m/s , vf equals to 60 m/s and t equals 10 s. Put in equation "a". a=60-0/10 =6m/s2

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A 1900kg car starts from rest and drives around a flat 65-m-diameter circular track. The forward force provided by the car's dri

s344n2d4d5 [400]

Answer:

$The\quad magnitude\quad of\quad the\quad car's\quad acceleration\quad at\quad t=13s\quad \quad =2.52m/{ s }^{ 2 }\\ The\quad direction\quad of\quad the\quad car's\quad acceleration\quad at\quad t=13s\quad =15.{ 72 }^{\o}\\The\quad car\quad begins\quad to\quad slide\quad out\quad \quad of\quad the\quad circle\quad after\quad 26.09s.\quad \quad \quad \quad$

Explanation:

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3 years ago

☆Will Give Brainliest☆

Masja [62]

Answer: :)

1.) The Doppler effect is, the change in sound or light that occurs whenever there is motion between the source and its observer. The siren of the fire engine has a lower pitch as it moves away because the waves are now spread out causing a lower frequency and a lower pitch.

2.) Wave frequency is related to wave energy. Since all that waves really are is traveling energy, the more energy in a wave, the higher its frequency. The lower the frequency is, the less energy in the wave.

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3 years ago

Electromagnetic radiation consists of discrete packets of kinetic energy called ______, which are characterized by a certain wav

aleksandr82 [10.1K]

Electromagnetic radiation consists of discrete packets of kinetic energy called Photons, which are characterized by a certain wavelength and energy level.

<h3>What are photons? </h3>

The representation by a particle of a quantum of light or any other electromagnetic radiation is called photons. The energy is proportional to the frequency of radiation however it has zero mass. It travels at a constant speed. It is a carrier of energy. When the sun changes the particles into both light and heat, it is a photon. They don’t carry any electrical charge. They are like electric fields traveling through space as shown by Maxwell in his theory. They can be easily created and destroyed. They are also called light quantum.

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brainly.com/question/20912241

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1 year ago

Energy can do blank or bring about change

Mrac [35]

Work

Explanation:

Energy can do work or bring about change.

Energy is simply the ability to do work. When work is done, changes occur in a body.

There are different forms of energy and they are all related to work done.
When work is done on a body, a force causes a change in that body.
Both potential and kinetic energy are the same as work done.
Energy is needed to do work.
Work is done when a body changes energy.

Learn more:

Energy brainly.com/question/5416146

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3 years ago

A boat is able to move through still water at 20 m/s. It makes a round trip to a town 10 km upstream. If the river flows at 5m/s

Nataly_w [17]

Answer:

The time required for this round trip is 1066.66 s

Explanation:

Given;

velocity of boat through still water, v₁ = 20 m/s

distance moved by the boat, d = 10 km = 10,000 m

velocity of the river, v₂ = 5 m/s

time = d / v

The boat made two journeys which formed the round trip.

During the first part of the journey, the boat moves upstream in opposite direction to the flow of the river and the resultant velocity is calculated as;

Resultant velocity = 20 - 5 = 15 m/s

Time for this journey, = 10000/ 15 = 666.66 s

During the second part of the journey, the boat moves downstream in the same direction to the flow of the river and the resultant velocity is calculated as;

Resultant velocity = 20 + 5 = 25 m/s

Time for this journey, = 10000/ 25 = 400 s

Total time for the trip = 666.66 s + 400 s = 1066.66 s

7 0

3 years ago