Question

A women backs her car out of her garage with an acceleration of 1.40 m/s^2. How long does it take her to reach a speed of 2.00 m/s?

a) 0.70 S
b) 1.43 s
c) 2.80 s
d) 3.40 s

Answer 1

It takes approximately 1.43 seconds for the car to reach a speed of 2.00 m/s.

Step-by-step explanation:

To solve this problem, we can use the equation v = u + at, where v is the final speed, u is the initial speed, a is the acceleration, and t is the time.

Given that the initial speed, u, is 0 m/s and the acceleration, a, is 1.40 m/s², we can substitute these values into the equation to calculate the time it takes to reach a speed of 2.00 m/s:

v = u + at

2.00 m/s = 0 m/s + (1.40 m/s²)(t)

t = 2.00 m/s / 1.40 m/s² = 1.43 s

Therefore, it takes approximately 1.43 seconds for the car to reach a speed of 2.00 m/s.