Question

a car accelerates at 2 m/s². assuming the car starts from rest, how much timr does it need to accelerate to a speed of 30 m/sNo pictures

Answer 1

Given:

The acceleration of the car is a = 2 m/s^2

The initial speed of the car is

`v_0=0ms^(-1)`

The final speed of the car is

`v_f=30\text{ m/s}`

To find the time taken.

Step-by-step explanation:

The formula to calculate the time taken is

`t=(v_f-v_(_0))/(a)`

Substituting the values, the time taken will be

`\begin{gathered} t=(30-0)/(2) \\ =15\text{ s} \end{gathered}`

Final Answer: The time taken is 15 s.