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Grade 8 Chapter 6.1

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1.
1 point
Which scientist first thought that everything takes the same amount of time to fall?
2.
1 point
Why do things fall to the ground at the same rate?
3.
1 point
Why is a heavier object harder to accelerate than a lighter one?
4.
1 point
the rate at which velocity changes over time
5.
1 point
the rate at which everything falls toward Earth
6.
1 point
the change in velocity of a falling object
7.
1 point
the symbol for acceleration due to gravity
8.
1 point
the symbol for time an object takes to fall
9.
1 point
the symbol for change in velocity
10.
1 point
A force that works against the motion of objects through air is called_________.
11.
1 point
Air resistance pushes up on a falling object until it equals the force of _______ pushing down.
12.
1 point
When a falling object stops accelerating, it falls at __________.
13.
1 point
What causes astronauts in orbiting spacecraft to seem weightless?
14.
1 point
the path of an orbiting spacecraft
15.
1 point
the path of spacecraft in free fall due to gravity
16.
1 point
the path of the spacecraft without gravity
17.
1 point
Which of the following is orbiting?
18.
1 point
Which is not true of centripetal force?
19.
1 point
When you throw something, what do you call its curved path?
20.
1 point
What is the motion parallel to the ground called?
21.
1 point
What is motion perpendicular (straight down) to the ground called?
22.
1 point
When you throw a ball, what pulls it down?
23.
1 point
If you want to hit a target, where should you aim?
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