Notes

Questions are due on Mon Oct 23, 2023 11:59 PM (5 days from now)
Question 1
(1 points)

{#302477) {Independent Perpendicular Motion}



You stand on a tall cliff and throw a ball so that it is initially moving purely horizontally. If we neglect the effect of air friction, what is the motion of the ball a short time later.?





Select the correct answer
Static in the horizontal direction, constant velocity in the vertical direction
None of above
Constant velocity in the horizontal direction, constant acceleration in the vertical direction
Constant acceleration in the horizontal direction, constant acceleration in the vertical direction
Constant velocity in the horizontal direction, constant velocity in the vertical direction
No answer submitted
0 of 3 checks used

Question 2
(1 points)

{#973916) {Independent Perpendicular Motion}



A bullet is fired horizontally with an initial speed of 200 m/s at a height of 1m above the ground. How long will it take the bullet to hit the ground?

Select the correct answer
0.66s
1.66s
0.45s
1.25s
0.80s
No answer submitted
0 of 3 checks used

Question 3
(1 points)

{#532282) {Projectile Motion} / {Horizontal Launch}



A bullet is fired horizontally from a handgun at a target 100.0 m away. If the initial speed of the bullet as it leaves the gun is 300.0 m/s, how far vertically will the bullet have dropped by the time it hits the target? Ignore the effects of air resistance.

Select the correct answer
0 m
3.105 m
1.210 m
0.5444 m
No answer submitted
0 of 3 checks used

Question 4
(1 points)

{#059024) {Projectile Motion} / {Angled Launch}



Player A hits a home run hit a home run into the parking lot. Player B hits the ball at the same angle as player A, but at half of the initial velocity. For simplicity, assume that the ball starts and ends at ground level. Which of the following is FALSE about this scenario?



Select the correct answer
The magnitude of the final velocity for Player B's ball is half of that for Player A.
The time of flight for Player B's ball is half of that for Player A.
The height of the highest vertical point for Player B's ball is half of that for Player A.
The final angle of the object at final impact for Player B's ball is the same as that for Player A.
No answer submitted
0 of 3 checks used

Question 5
(1 points)

{#035214) {Projectile Motion} / {Angled Launch}



A cannonball is launched at an initial speed of 50 m/s at 5 different angles with respect to the horizon, as shown in the below figure. Which of these trajectories will have the longest time of flight (time spent in the air)?

Image size: SMLMax



Select the correct answer
60
�
​o
​​
75
�
​o
​​
45
�
​o
​​
15
�
​o
​​
30
�
​o
​​
No answer submitted
0 of 3 checks used

Question 6
(1 points)

{#889043) {Projectile Motion} / {Angled Launch}



A cannon sitting on level ground is aimed at 45.0 degrees relative to the horizontal. It fires a test shot at a target located 100.0 meters away from the cannon on the same level ground. The test overshoots the target by 20.0 meters. Which of the following angles can the cannon be adjusted to to hit the target. You may neglect air resistance and assume the cannon always delivers the same initial velocity to the cannonball .

Select the correct answer
49.1
deg
deg
22.7
deg
deg
52.8
deg
deg
28.2
deg
deg
35.9
deg
deg
No answer submitted
0 of 3 checks used

Question 7
(1 points)

{#941542) {Projectile Motion} / {Non-Level Target}



A man, located a distance
�
=
3
.
0

m
d=3.0 m from the base of a building, fires a projectile towards the building at an angle
�
=
7
0
∘
θ=70
​∘
​​ above the horizontal. If the initial speed of the projectile is
�
=
3
9
.
4

m
/
s
v=39.4 m/s, at what height
ℎ
h does the projectile strike the building?

Select the correct answer
3 m
0 m
8 m
2 m
No answer submitted
0 of 3 checks used

Question 8
(1 points)

{#504496) {Projectile Motion} / {Non-Level Target}



A baseball player wants to hit a home run over the wall of a stadium. The player swings the baseball bat so that it hits the ball when it is at a height of 1.16
m
m above the ground. The ball flies off at an angle of
3
0
∘
30
​∘
​​ above the horizontal and at a speed of 37.6
m
/
s
m/s. What is the tallest wall that the player can clear (i.e., get the ball over) if the wall is 87.0

m
m away horizontally?

Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 1e6, 5.23e-8

Enter answer here
m
No answer submitted
0 of 5 checks used

Question 9
(1 points)

{#011053) {Projectile Motion} / {Non-Level Target}



World’s Longest Par 3. The tee of the world’s longest par 3 sits atop South Africa’s Hanglip Mountain at 400.0 m above the green and can only be reached by helicopter. The horizontal distance to the green is 359.0 m. Neglect air resistance and answer the following questions. If a golfer launches a shot that is
4
0
∘
40
​∘
​​ with respect to the horizontal, what initial velocity must she give the ball?

Select the correct answer
39.2 m/s
46.7 m/s
25.2 m/s
17.8 m/s
30.0 m/s
No answer submitted
0 of 3 checks used

Question 10
(1 points)

{#024209) {Multi-concept / Multi-stage}




A [professionally trained] thrill-seeking college student is on vacation in Hawaii. She hikes to the top of a very tall cliff that sits above a large, deep lake. The student steps back 12.2 meters from the edge of the cliff and accelerates from rest towards the cliff edge at a rate of 3.00 m/s2. When she reaches the edge of the cliff, she launches herself off the cliff at 15.0º angle above the horizontal - launching with the speed she attained during her run. Calculate the magnitude of her velocity when she hits the water exactly 1.56 seconds after launching herself off the edge of the cliff. For this calculation, neglect air resistance.

Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 1e6, 5.23e-8

Enter answer here
m/s
No answer submitted
0 of 5 checks used

Question 11
(1 points)

{#198700) {Multi-concept}




An irate toddler sitting at the 0.80-meter tall dinner table swats his sippy cup so that it launches off the edge of the table horizontally with a speed of 6.95 m/s. Calculate the speed at which the sippy cup hits the ground. Assume that air resistance is negligible.

Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 1e6, 5.23e-8

Enter answer here
m/s
No answer submitted
0 of 5 checks used
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