Question

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

Answer 1

Given:

Car A is traveling with a constant velocity of,

`18\text{ m/s}`

The initial speed of car B is,

`v_i=0\text{ m/s}`

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

`v_f=10\text{ m/s}`

To find:

Which car has a greater acceleration

Step-by-step explanation:

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

The acceleration of car B is,

`\begin{gathered} a_B=(v_f-v_i)/(t) \\ =(10-0)/(4) \\ =2.5\text{ m/s}^2 \end{gathered}`

So, Car B has greater acceleration.

Hence, Car B has greater acceleration.