The car moving at an angle from the hump passes 120m in 10 seconds, having rolled down the hill

The car moving at an angle from the hump passes 120m in 10 seconds, having rolled down the hill and continuing to move, it goes to a full stop another 360m in 1.5 minutes, find the average speed for the entire movement.

These tasks: the movement of the car along the slope (S1 = 120 m; t1 = 10 s); movement to a complete stop (S2 = 360 m; t2 = 1.5 min (in SI t2 = 900 s)).

The average speed of the car under consideration for the entire time of its movement is determined by the formula: Vav = (S1 + S2) / (t1 + t2).

Calculation: Vav = (120 + 360) / (10 + 90) = 480/100 = 4.8 m / s.

Answer: The car under consideration had an average speed of 4.8 m / s for the entire time of movement.