A car initially traveling at 30 m/s passes a road sign located 750 meters ahead in a time of 12 seconds. When the car reaches the road sign, the driver applies the brakes and brings the car to rest at a traffic light located 900 meters ahead of the road sign. Determine the cars velocity when it reaches the road sign in m/s.
To determine the car's velocity when it reaches the road sign, we need to use the formula:
velocity = distance/time
The distance traveled by the car is 750 meters, and the time taken is 12 seconds. Therefore:
velocity = 750 meters / 12 seconds = 62.5 meters/second
Hence, the car's velocity when it reaches the road sign is 62.5 m/s.