Question

 A truck proceeds to be able to pass another truck. Its speed increases from 50 to 100 km/h in 4 seconds. What is its average acceleration?

Answer 1

Initial Velocity = 50 Km/hour = 0.014 Km/sec.

Final Velocity = 100 Km/hour = 0.028 Km/sec

Time duration = 4 Sec.

$Average Acceleration = \frac{Final Velocity - Initial Velocity}{Time Duration}$

$Average Acceleration = \frac{100 - 50}{4/3600}$

On solving, we get

Average Acceleration = 45045 Km/hour sq. = 12.5 Km/sec. sq.