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Midterm Review #1

Authored by Michael Mary

Physics

9th - 11th Grade

Used 2+ times

Midterm Review #1
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15 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A boy on a skateboard throws a ball. The skateboard moves in the opposite direction from the thrown ball because:

the skateboard resists acceleration due to Newton's 2nd Law

the ball exerts a reaction force on the boy as it is being thrown

the ball carries away some inertia

the ball has positive energy, and the boy and the skateboard are left with negative energy

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of these would have the greater inertia?

a falling leaf

a seated high school student

a rising helium-filled toy balloon

a softball in flight

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Two apples accidentally fall out of an upstairs window of a house. One weighs twice as much as the other. The time it takes the heavier apple to hit the ground is:

The same as the lighter apple

Half the time as the lighter apple

Twice the time a the lighter apple

Just a little less time than the lighter apple

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A person pulls a rope tied to a tree. If the person pulls the rope with a force of 120N, what is the reaction force on the rope?

0 N

240N in the same direction

120N in the opposite direction

120N in the same direction

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If no forces are acting on an object or there is no net force, its motion will:

slow down and eventually stop

continue in the same direction with the same speed

continue in the same direction but could change speed

continue at the same speed but could change direction

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A satellite weighs 200N on the surface of the Earth. What is its gravitational force at a distance of one Earth radius above the surface of Earth (ie, twice the distance)

50N

100N

400N

800N

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A baseball player runs 27.4 m to 1st base, over runs it by 3 m, and then returns to it. What is the magnitude of the players DISTANCE from the batter's box.

24.4 m

30.4 m

27.4 m

33.4 m

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