when a car goes around an 8-km track in 20-minutes. what is the average speed and velocity.
8000 m/1200 s = .667 m/s
It ended up back at the same place at the same speed and direction so its velocities averaged out to zero.
acar ascleret from the rest 90km/h in 10s.what is acecleration?
To calculate the average speed and velocity, we need to determine the total distance covered and the total time taken.
Given that the car goes around an 8-km track in 20 minutes, we can use these values to find the average speed.
Average speed is calculated by dividing the total distance traveled by the total time taken.
In this case, the total distance covered is 8 km and the total time taken is 20 minutes.
Average Speed = Total distance / Total time
Plugging in the values, we get:
Average Speed = 8 km / 20 min
To determine the average velocity, we need to consider both the magnitude and direction of motion.
Since the car is moving around a track which forms a closed loop, the net displacement is zero. Therefore, the average velocity would also be zero.
So, the average speed is 8 km / 20 min and the average velocity is zero.