The car drove 100 meters in 25 seconds, and the next 300 meters in 1 minute

The car drove 100 meters in 25 seconds, and the next 300 meters in 1 minute. Determine the average speed of the vehicle.

Average vehicle speed:

Vav. = S / t, where S is the common path (S = S1 + S2), t is the total travel time (t = t1 + t2).

The first section of the path:

S1 = 100 m; t1 = 25 s.

Second section of the path:

S2 = 300 m; t1 = 1 min = 60 s.

Let’s calculate the average speed of the car:

Vav. = (S1 + S2) / (t1 + t2) = (100 + 300) / (60 + 25) = 400/85 ≈ 4.7 m / s.

Answer: The average vehicle speed is 4.7 m / s.