question 1 - 4\nover the course of 5 seconds, a car that is driving 30 m/s slows down until it is 10 m/s…

question 1 - 4\nover the course of 5 seconds, a car that is driving 30 m/s slows down until it is 10 m/s. what is its acceleration?\n-2 m/s²\n-4 m/s\n2 m/s²\n-4 m/s²\n4 m/s

question 1 - 4\nover the course of 5 seconds, a car that is driving 30 m/s slows down until it is 10 m/s. what is its acceleration?\n-2 m/s²\n-4 m/s\n2 m/s²\n-4 m/s²\n4 m/s

Answer

Explanation:

Step1: Identify known quantities

Initial velocity ( u = 30 , \text{m/s} ), final velocity ( v = 10 , \text{m/s} ), time ( t = 5 , \text{s} )

Step2: Use acceleration formula

( a = \frac{v - u}{t} )

Step3: Substitute values

( a = \frac{10 - 30}{5} = \frac{-20}{5} = -4 , \text{m/s}^2 )

Answer:

-4 m/s²