Question

A car goes from 0m/s to 42.90m/s in 18.05s? What is the acceleration of the car?

a) 1.5 m/s²
b) 2.0 m/s²
c) 2.5 m/s²
d) 3.0 m/s²

Answer 1

The acceleration of the car is calculated using the change in velocity over the change in time, which gives an acceleration of about 2.38 m/s², or approximately 2.5 m/s².

Step-by-step explanation:

To determine the acceleration of the car, we can use the formula for acceleration, which is the change in velocity (Δv) over the change in time (Δt). The formula is:

a = Δv / Δt

In this case, the car goes from 0 m/s to 42.90 m/s in 18.05 s. So, we have:

Δv = final velocity - initial velocity = 42.90 m/s - 0 m/s = 42.90 m/s

Δt = 18.05 s

Now we plug in the values:

a = 42.90 m/s / 18.05 s = 2.38 m/s²

The closest answer from the options provided is (c) 2.5 m/s², taking into account that the actual result is rounded to one decimal place.