1. You are traveling with a constant speed of 26 m/s. (a) What is this speed in

Question

1. You are traveling with a constant speed of 26 m/s. (a) What is this speed in units of mi/h? (b) How far do you travel (in m) in a time of 27 min? Does this value seem reasonable? (c) What can you say about the average speed during this time and the instantaneous speed at any instant during this time interval?

4. You travel east for 32 km at 22 m/s. You then travel west for 35 min at 30 m/s. Let the positive-x direction point eastward, and say that you started at the position xi = 0. (a) What total distance did you travel during your trip? (b) What was your final x-position? (c) What was your average speed during this trip? (d) What was your average x-component of velocity?

Explanation / Answer

a) V = (26*(1/1609)*(3600)) = 58.12 mi / h

b) d = v*t= 26*27*60 = 42120 m

NO

c) Vavg = 26 m/s

instantaneous speed = 26 m./s

4) a) d1 = 32km = 32000 m......t1 = d1/v1 = 32000/22 = 1454.54 s

d2 = v2*t2 = 30*35 *60 = 63000 m = 63 km

D = d1 +d2 = 95 km

b) x = +32 - 63 = -31 km

c) Vav = ((95000)/(1454.45+(35*60))) = 26.73 m/s

d) Vx = -((3100)/(1454.45+(35*60))) = -0.87 m/s

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