Question

lila is a track and field athlete. she must complete four laps around a circular track. the track itself is a 400 meter track and it took her 6 minutes total to complete. which best describes her speed and velocity? (there are 60 seconds in 1 minute ) her speed is 4.4 m/s, and her velocity is 0 m/s. her speed is 1.1 m/s, and her velocity is 0 m/s. her speed is 0 m/s, and her velocity is 2400 m/s. her speed is 4.4 m/s, and her velocity is 4.4 m/s.

Explanation:

Step1: Calculate total distance

Lila runs 4 laps, each lap is 400 meters. So total distance \( d = 4\times400 = 1600 \) meters.

Step2: Calculate total time in seconds

Total time is 6 minutes. Since 1 minute = 60 seconds, total time \( t = 6\times60 = 360 \) seconds.

Step3: Calculate speed

Speed is total distance divided by total time. So speed \( v_{speed}=\frac{d}{t}=\frac{1600}{360}\approx4.4 \) m/s.

Step4: Analyze velocity

Velocity is displacement over time. Since she ends up at the starting point after 4 laps, displacement is 0. So velocity \( v_{velocity}=\frac{0}{360}=0 \) m/s.

Answer:

Her speed is 4.4 m/s, and her velocity is 0 m/s.