Question

if a car can go from 0 to 60mi/hr in 8 seconds what would be its fin speed after 5 seconds if its starting speed were 50mi/hr help please

Answer 1

Answer:

87.5 mi/hr

Explanation:

To find the acceleration, this is where the 0-60 mi/hr in 8.0 seconds comes into play. To find the acceleration:

Acceleration = Change in velocity/Time

Acceleration = (Final velocity - initial velocity)/Time

Acceleration = (60 mi/hr - 0 mi/hr)/8.0s

Acceleration = 7.5 mi/hr/s (the unit is miles PER hour PER second)

So, now that the acceleration is known let's calculate the final velocity that the question asked for.

Rearrange acceleration formula:

Final Velocity = (Acceleration * Time) + Initial Velocity

Final velocity = (Acceleration * time) + 50 mi/hr

Final velocity = (7.5 (mi/hr)/s * 5.0) + 50 mi/hr = 87.5 mi/hr