Ask a New Question

Question

compare your average speed in the following cases.
a. you walk 73.2 m at a speed of 1.2 m/s and then run 73.2 m at a speed of 3.1 m/s along a straight track.

b. you walk 1 min. at a speed of 1.2 m/s and then run for 1 min. at 3.1 m/s along a straight track.
10 years ago

Answers

Steve
(a)since time=distance/speed, you have

total distance: 73.2+73.2=146.4m
total time: 73.2/1.2 + 73.2/3.1 = 84.6s
avg speed: 146.4m/84.6s = 1.73 m/s

do (b) the same way
10 years ago

Related Questions

WHAT IS THE AVERAGE SPEED OF A BALL FALLING FROM THE HIEGHT OF 125 METERS AT THE SPEED OF 5 SECONDS... What is the average speed of the car during the first 105? What is the average speed of a car that travels 210 m in 25 second, then speeds up to 0.47 km in 20... At an average speed of 10 m/s, how many kilometers can a cyclist travel in a 6 hour day? Compare the average speed in the following cases. a. You walk 73.2 m at a speed of 1.2 m/s and then... The average speed of a certain particle in meters per second is given by the equation s(t)=(2t^2+8t+... What must be your average speed in order to travel 350 km in 5.15 h? 7c. What is the average speed of the object? Remember the formula for speed: S= D/T (Distance divide... What is the average speed of a runner who covers 5 km in 25 minutes?
Ask a New Question
Archives Contact Us Privacy Policy Terms of Use