When driving a Toyota avensis car along a straight road for 16.5km at 50km/h, it suddenly runs out of fuel and stopped. Over the next 20min,
you walked another 2.5km further along the road for a petrol station.
Determine the average velocity of your journey from beginning of your
drive to your arrival at the fuelling station.
A 10.Oms-1
B. 8.Oms
C. 6.Oms D. 4.0ms 1

a longitudinal wave moves energy that is to the direction of the wave’s movement. - true

c because the action was the roller coaster reaches bottom of hill (action) reaction would be blood tends to drain away from head

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the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the   box is the same as its force.

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im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this.   hope that you like the video and that it explains more in detail to you.

that is the link.

small = small current large mag large current