Their average speed is the harmonic mean of 30 and 45 while their average velocity is zero.
His velocity was zero - since he's back to where he started. (Try to substitute speed where appropriate.)
His velocity was zero - since he's back to where he started. (Try to substitute speed where appropriate.)
No. If you can drive around a ten-mile track in the same time it takes you to drive around a one-mile track, then your angular velocity is the same in both cases. But in order to do that, you'll need much higher tangential velocity during the longer run. Tangential velocity is what you'd normally call your 'speed' as you blaze around the track.
To find Julie's average velocity, we first calculate the total distance she ran. Eight laps on a quarter-mile track equals 2 miles (8 laps × 0.25 miles/lap). Since she completed this in eighteen minutes, we convert that to hours: 18 minutes is 0.3 hours. Her average velocity is then distance divided by time, which is 2 miles / 0.3 hours = approximately 6.67 miles per hour.
sure.
their average speed is greater than their average velocity.
The moon's average velocity around Earth is about 2,288 miles per hour.
Yes, since velocity is speed and direction its average can be zero. For example say a plane flies from point A to point B at 300 mph and turns around to go from B to A at 300 mph; its average velocity is 0 since it is in the same spot as it started ( the velocity vectors cancel) but its average speed is 300 mph.
His velocity was zero - since he's back to where he started. (Try to substitute speed where appropriate.)
His velocity was zero - since he's back to where he started. (Try to substitute speed where appropriate.)
Yes, a body can have a nonzero average speed but zero average velocity if it moves around a closed path and returns to its starting point. For example, if a car travels around a circular track at a constant speed, its average speed will be nonzero (as distance is covered), but its average velocity over the entire trip will be zero as the displacement is zero.
The average velocity of a unicycle going around semicircles would be zero if it starts and ends at the same point, since the displacement is zero. If it starts and ends at different points, the average velocity would depend on the total distance traveled and the time taken to complete the semicircles.
His velocity was zero - since he's back to where he started. (Try to substitute speed where appropriate.)
No, the average velocity is not zero. Average velocity is the total displacement divided by the total time taken. For one lap around the track, the athlete ends up back at the starting line, so the total displacement is not zero.
The average velocity of atoms in a monatomic gas can be calculated using the root-mean-square speed formula. For neon at 288 K, the average velocity would be around 494 m/s.
The velocity sensor should be placed at approximately 40-60% of the total water depth, so in this case, it should be placed at around 5-7.5 meters from the surface to estimate the stream's average velocity accurately. Placing it in this range helps account for variations in velocity across the vertical profile of the stream.
The average overhand throw velocity for Division 1 softball players is around 60-70 miles per hour. This velocity can vary depending on the position of the player and their level of experience and training.