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Transcript
1) A glass marble and a metal marble are the same size.
The metal marble weighs three times as much as the glass marble.
If they are both dropped from the ceiling at the same time:
A) The heavier (more massive) metal marble will land first.
B) Both marbles will land at the same time.
C) The lighter (less massive) glass marble will land first.
2) The same two marbles roll off a one meter cube at the same speed.
Compared to the lighter glass marble.
A) The metal marble lands farther from the cube.
B) The metal marble lands the same distance from the cube.
C) The metal marble lands about closer to the cube.
3) A bowling ball rolls into a balloon.
A) Only the bowling ball exerts a force.
B) The bowling ball exerts more force than the balloon.
C) The balloon and bowling ball exert the same amount of force on each other.
D) The balloon exerts more force than the bowling ball.
E) Only the balloon exerts a force.
4) A ball rolls with a track on a level table top. When the tack ends. Which path will the ball take?
A frictionless cat is sliding along a floor from west to east. It is trying to run north. It passes by a
wall. It kicks the wall. This gives the cat an impulse (change of momentum) in the north direction.
Note the path of the cat before kicking the wall as seen from above.
At time S the cat is sliding east with constant speed and direction (constant velocity).
This happens until the time of the kick, time K.
S----------------------K_____the frictionless wall.
5) What path does the frictionless cat take after kicking the wall?
S----------------------K_____the frictionless wall.
6) The speed of the cat (relative to the floor) after the kick is:
A) Faster than before the kick.
B) The same speed as before the kick.
C) Slower than before the kick.
D) It is impossible to know if the speed changed or remained the same.
E) None of the above.
7) Along the path chosen in question 5, the speed of the cat is:
A) increasing.
B) constant.
C) decreasing.
D) None of the above.
E) All of the above.
8) After the kick, the forces acting on the cat are:
A) Only the downward force of gravity.
B) Only the stronger than gravity force of changing speed.
C) Only the stronger than gravity force of changing direction.
D) None of the above.
E) All of the above.
9)
10) Jill is a stunt rider for a circus. She will stand on her bike as it goes around a sharp turn.
How should she stand?
A) Vertical (normal to the ground).
B) Horizontal and toward the center of the turn.
C) In line with the bike (normal to the bike seat).
11) You enter an elevator with a scale.
Before the elevator starts you check your weight. This will be called your standard weight.
When the elevator first starts to rise. What happens to your weight?
A) Weight increases.
B) Weight remains the same as your standard weight.
C) Weight decreases.
12) As the elevator continues to rise, it reaches a maximum upward velocity.
While the elevator moves constantly at its this velocity.
How does the scale show your weight?
A) It shows a weight greater than your standard weight.
B) It shows a weight equal to your standard weight.
C) It shows a weight less than your standard weight.
13) As the elevator slows down to stop at an upper floor,
how does the scale show your weight?
A) It shows a weight greater than your standard weight.
B) It shows a weight equal to your standard weight.
C) It shows a weight less than your standard weight.
14) Once the elevator comes to rest at the upper floor and the doors open,
How does the scale show your weight?
A) It shows a weight greater than your standard weight.
B) It shows a weight equal to your standard weight.
C) It shows a weight less than your standard weight.
15) Which position (height) versus time graph best matches the movement of the elevator for
questions 11 to 14.
Starting at rest, rising, reaching terminal velocity, slowing, stopping at an upper floor
Please, express multiple choice answers with CAPITAL letters.
Let your teacher know if you need extra scratch paper.
And write your name, date and period on the reverse side of this sheet.
1)_________
2)_________
3)_________
4)_________
5)_________
6)_________
7)_________
8)_________
9)_________
10)_________
11)_________
12)_________
13)_________
14)_________
15)_________
Name:____________________________________
Date:_______
Period:___
Write a circled number after each question to show how confident you are about answering it.
for must confident,
for least confident.
Than do your best to answer them starting with the ones and working towards the fives.
16) What is distance?
17) What is the difference between distance and displacement?
18) What is area?
19) What is volume?
20) What is force?
21) What is the difference between force and pressure?
22) What is speed?
23) What is the difference between speed and velocity?
24) What is mass?
25) What is density?
26) What is the difference between mass and weight?
27) Which of the qualities (weight, density, mass, velocity, speed, area, displacement, distance):
are scalar measures?
are vector measures?