Velocity = Distance ÷ Time
Average Velocity = (10 + 10) ÷ (1/3 + 1/2) = 20 ÷ 5/6 = 20 x 6/5 = 24 mph
NOTE : The times in minutes have been converted into fractions of an hour to enable the answer to be provided in miles per hour.
zero
He drove 20 miles in 50 min. so average was 20 x 60/50 = 24 mph
Their average speed is the harmonic mean of 30 and 45 while their average velocity is zero.
Well, speed is equal to distance over time (s = d/t) However, velocity means speed WITH direction. This means that the teacher's drive to school would be a positive velocity, but the drive back would be a negative one. Now, let's calculate velocities using the s = d/t formula! Distance to school from home: speed = distance/time speed = +10 miles/20 minutes speed = 1/2 miles per minute Distance from school to home: speed = distance/time speed = -10miles/20 minutes speed = -1/3 miles per minute Note: the velocity towards home will be negative since we are travelling in the opposite direction of the distance to school (which is positive) We have our two velocities- let's calculate the average! 1/2 -1/3 = 1/6 1/6 divided by 2 = 1/12 Thus, our average velocity is 1/12 miles per minute! You can convert this into decimal values if required. Hope this helped! (:
Her average speed was 58 miles per hour.
zero
He drove 20 miles in 50 min. so average was 20 x 60/50 = 24 mph
0 m/s appex
their average speed is greater than their average velocity.
Their average speed is the harmonic mean of 30 and 45 while their average velocity is zero.
40mph
Well, speed is equal to distance over time (s = d/t) However, velocity means speed WITH direction. This means that the teacher's drive to school would be a positive velocity, but the drive back would be a negative one. Now, let's calculate velocities using the s = d/t formula! Distance to school from home: speed = distance/time speed = +10 miles/20 minutes speed = 1/2 miles per minute Distance from school to home: speed = distance/time speed = -10miles/20 minutes speed = -1/3 miles per minute Note: the velocity towards home will be negative since we are travelling in the opposite direction of the distance to school (which is positive) We have our two velocities- let's calculate the average! 1/2 -1/3 = 1/6 1/6 divided by 2 = 1/12 Thus, our average velocity is 1/12 miles per minute! You can convert this into decimal values if required. Hope this helped! (:
the bus drove east on the freeway for 5 minutes
Her average speed was 58 miles per hour.
You need a new battery or a new alternator.
The velocity of the car was too fast for the sharp turn ahead.
I drove BY the school.