A racecar driver steps on the gas, and his car travels 16 meters in 2 seconds, starting from rest. What is the average velocity in m/s and km/h?
avg=8m/s
avg=8m/s*1km/1000m*3600sec/hr=8*3.6km/hr
To find the average velocity, we use the formula:
Average velocity = total displacement / total time
First, let's calculate the total displacement. The car travels 16 meters, so the displacement is 16 meters.
Next, let's calculate the total time. The car takes 2 seconds to travel this distance.
Now, we can substitute these values into the formula:
Average velocity = 16 meters / 2 seconds
Average velocity = 8 meters/second
To convert this to kilometers per hour, we need to know that 1 kilometer is equal to 1000 meters, and 1 hour is equal to 3600 seconds. Using these conversion factors, we can calculate the average velocity in kilometers per hour.
Average velocity = (8 meters/second) * (3600 seconds/1 hour) * (1 kilometer/1000 meters)
Average velocity = 28.8 kilometers/hour
Therefore, the average velocity of the racecar is 8 m/s and 28.8 km/h.