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Car A is traveling with a constant velocity of 18 [m/s]. Car B speeds up from 0 [m/s] to 10 [m/s] in 4 seconds. Which car has a greater acceleration?Car ACar BCar A and Car B have the same accelerationNeither car is accelerating

Respuesta :

Given:

Car A is traveling with a constant velocity of,

[tex]18\text{ m/s}[/tex]

The initial speed of car B is,

[tex]v_i=0\text{ m/s}[/tex]

After t=4 s, carB's speed is,

[tex]v_f=10\text{ m/s}[/tex]

To find:

Which car has a greater acceleration

Explanation:

The acceleration of Car A is Zero as there is no change in velocity with time.

The acceleration of car B is,

[tex]\begin{gathered} a_B=\frac{v_f-v_i}{t} \\ =\frac{10-0}{4} \\ =2.5\text{ m/s}^2 \end{gathered}[/tex]

So, Car B has greater acceleration.

Hence, Car B has greater acceleration.

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