Respuesta :

Ritmeks

The distance that will take the car to speed yup from 20m/s to 50m/s is 262.5 meters

The first step is to write out the parameters given in the question are

acceleration= 4

initial velocity= 20

final velocity= 50

The distance can be calculated as follows

V²= U² + 2as

50²= 20² + 2(4)(s)

2500= 400= 8s

2500-400= 8s

2100= 8s

s= 2100/8

s= 262.5 meters

Hence the distance is 262.5 meters

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temdan2001

From the definition of acceleration, the time it will take the car to speed up is 7.5 seconds

Given that a car accelerates at a rate of 4.00 m/s^2. To calculate how long it will take the car to speed up from 20 m/s to 50 m/s, let us first mark out the needful parameters.

Acceleration a = 4 m/[tex]s^{2}[/tex]

Initial velocity U = 20 m/s

Final Velocity V = 50 m/s

Time t = ?

From the definition of acceleration, acceleration is the rate of change of velocity. That is,

a = (V - U)/ t

Substitute all the parameters into the formula above.

4 = ( 50 - 20) / t

Cross multiply

4t = 30

Make t the subject of formula

t = 30/4

t = 7.5 t

Therefore, the time it will take the car to speed up is 7.5 seconds

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