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A car accelerates from rest for 5 seconds until it reaches a speed of 20 m/s. what is the car's acceleration in meters per second per second?

a. 4

b. 1

c. 2

d. 5

e. 3

Respuesta :

WaleMaths
Acceleration = change in velocity divided by time taken...

I.e Acceleration = (Final velocity - Initial Velocity) /time taken...

The question says the body accelerate from rest... Therefore it's initial velocity = 0

It reach a speed(velocity) of 20m/s.. My final velocity

And the time taken to attain the velocity = 5 seconds....

Therefore

acceleration = (20-0)/5

a = 20/5

a = 4ms¯²

Hope this helped....

Acceleration of a body is the rate at which the velocity of the body changes with time. The acceleration of the car is 4 meter per second squared.

Given information-

Time taken by the car to accelerates is 5 seconds.

The car gets the speed of 20 m/s in 5 seconds.

What is acceleration?

Acceleration of a body is the rate at which the velocity of the body changes with time. Acceleration is the ratio of total change in the velocity of the body to the time taken.

It can be given as,

[tex]a=\dfrac{\Delta v}{\Delta t}[/tex]

A car accelerates from rest for 5 seconds until it reaches a speed of 20 m/s. Thus the acceleration of the car is,

[tex]a=\dfrac{20}{5} \\a=4[/tex]

Hence the acceleration of the car is 4 meter per second squared.

Learn more about the acceleration here;

https://brainly.com/question/2437624

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