1
to 1 m/s west in 4 seconds. What was her acceleration?
O A. -2 m/s2 west
O B. -4m/s2 west
OC. 0.5 m/s² west
OD. -3 m/s² west

1 Answer

2

Answer:

a = 0.5 m/s²

Explanation:

Given that,

Initial velocity, u = -3 m/s (west)

Final velocity, v = -1 m/s (west)

Time, t = 4 s

We need to find the acceleration of Alex. Acceleration of an object is the rate of change of velocity per unit time. So,

a=\dfrac{v-u}{t}\\\\a=\dfrac{\left(-1\right)-\left(-3\right)}{4}\\\\a=0.5\ m/s^2

So, her acceleration is 0.5 m/s². Hence, the correct option is (c).

Edit
avatar
Mrs. Tamia Raynor
15.5k 3 10 26
answered 6 months ago