Question

If a car accelerates at a rate of 8 m/s^2 how long will it take to increase its velocity from zero to 70 m/s

Answer 1

To find the time it takes for a car to accelerate from 8.0 m/s to 20.0 m/s at an acceleration rate of 3.0 m/s², we can use the equation v = u + at. Plugging in the values and simplifying the equation, we find that it would take 4.0 seconds.

Step-by-step explanation:

To find the time it takes for a car to accelerate from 8.0 m/s to 20.0 m/s at an acceleration rate of 3.0 m/s², we can use the equation:

v = u + at

Where:

• v is the final velocity (20.0 m/s)
• u is the initial velocity (8.0 m/s)
• a is the acceleration (3.0 m/s²)
• t is the time

Plugging in the values, we get:

20.0 m/s = 8.0 m/s + 3.0 m/s² * t

Simplifying the equation, we have:

12.0 m/s = 3.0 m/s² * t

Dividing both sides by 3.0 m/s², we find:

t = 4.0 seconds