Question

which object has a greater velocity, a ball rolling down a 3.4 meter hill in 6 seconds or a fish swimming upstream and covering 5.4 meters in 0.4 minutes?

Explanation:

Step1: Calculate ball's velocity

Velocity formula is $v = \frac{d}{t}$. For the ball, $d = 3.4$ meters and $t = 6$ seconds. So $v_{ball}=\frac{3.4}{6}\approx0.57$ m/s.

Step2: Convert fish's time unit

The fish's time $t_{fish}=0.4$ minutes. Since 1 minute = 60 seconds, $t_{fish}=0.4\times60 = 24$ seconds.

Step3: Calculate fish's velocity

For the fish, $d = 5.4$ meters and $t = 24$ seconds. So $v_{fish}=\frac{5.4}{24}= 0.225$ m/s.

Step4: Compare velocities

Since $0.57>0.225$, the ball has a greater velocity.

Answer:

The ball