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Earn +20 ptsQ: What is the distance of 90 km and 3 hours?
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What is a cars speed in km per hour if a 90-km took 3 hours?
87
What distance will a car traveling 65kilometers hour travel for 3 hours?
195 km
How long does it take to go 305 km at 90 km per hour?
305km/90km per hour = 3.39 hours so almost 3 and a half hours
What distance will a car traveling 65km pre hour travel in 3 hours?
195 km
A man walks towards east a distance of 3km at a rate of 5 km per hour and then towards north a distance of 4 km at a rate of 3 km an hourfind the average speed and velocity?
Speed is a scalar, velocity is a vector and so the direction of motion is important for velocity. Total distance travelled = 3km + 4 km = 7 km Total time taken = 3/5 hours + 4/3 hours = (9+20)/15 = 29/15 hours Average speed = 7 / (29/15) = 7*15/29 = 3.6207 km per hour. Final location = 3 km E + 4 km N = 5 km away from the starting point (by Pythagoras) in the direction 53.13 degrees = arctan(4/3). So average velocity = 5 / (29/15) = 5*15/29 = 2.5862 km per hour in the direction given above.
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