WT 1
9 points
Anna drives north at a speed of 50 km/h for the first hour. Then, she drives north for a second hour but slows down to 30 km/h. Compare or contrast the first hour of
her trip to the second hour of her trip.
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The displacement is the same for both hours because she is travelling north the entire time.
The displacement is greater in the second hour because her speed is slower.
The distances are the same for both hours because she is travelling north the entire time.
The distance is greater in the first hour because her speed is faster.
2
9 points
The Olympic record for running the 200 m dash is 19.3 seconds. What is the runner's velocity for this record?

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explanation:

they should be similar or the same

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.

hope this !

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.

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2