Physics check
posted by Jon .
1)How is displacement different from distance? Under what conditions can an object travel a certain distance and yet its resultant displacement be zero?
Displacement is a vector quantity while distance is a scalar quantity. If an object goes roundtrip its displacement will be zero.
2)What is the distance traveled by a vehicle in 12 minutes, if its speed is 35 km/h?
(35km/1h)(1000m/1km)(1h/60min)(1min/60sec)=9.72 m/s
720 sec/9.72
= 74 km

Jon, think. If he was taveling at 35km/hr for an hour, he would have went 35km. He traveled for 1/5 of an hour.
The answer is obviously wrong. It has to be about 7km (1/5 of 35)
Then, to top it off, you divided time by speed. Hmmmm. distance=velocity*time