Horizontal Displacement (m) +9.8 --9.8 -9.8 -9.8 D) -9.8 -9.8 4. Our equations of motions for projectiles assume: A) the start point is x = 0 m and y = 0 m. B) the horizontal velocity is a constant. C) there is no friction due to air resistance. D) All of the above. %3D %3D 5. The diagram at the right shows the trajectory of three artillery shells. Each was fired with the same initial speed. Which shell was in the air for the longest time? (Ignore air friction.) A C) Shell C. A) Shell A. D) Shells A and C were in the air for equal time, which was longer than for shell B. B) Shell B. 6. A projectile is fired into the air at some angle above the horizontal. The horizontal displacement of the projectile is measured against time in flight and the collected data is shown as a horizontal displacement versus time graph at the right. Based on this graph, the horizontal velocity of the projectile during this time interval is: A) constant. C) decreasing. B) increasing. D) equal to zero. draw the graph of Horizontal Displac

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Answer question 5
Horizontal
Displacement (m)
+9.8
-9.8
-9.8
D)
-9.8
-9.8
-9.8
4. Our equations of motions for projectiles assúme:
A) the start point is x = 0 m and y = 0 m.
B) the horizontal velocity is a constant.
C) there is no friction due to air resistance.
D) All of the above.
5. The diagram at the right shows the trajectory of three artillery
shells. Each was fired with the same initial speed. Which shell was
in the air for the longest time? (Ignore air friction.)
A) Shell A.
D) Shells A and C were in the air for equal time, which was
longer than for shell B.
B) Shell B.
C) Shell C.
6. A projectile is fired into the air at some angle
above the horizontal. The horizontal displacement of
the projectile is measured against time in flight and
the collected data is shown as a horizontal
displacement versus time graph at the right. Based
on this graph, the horizontal velocity of the projectile
during this time interval is:
A) constant.
C) decreasing.
B) increasing.
D) equal to zero.
Time (s)
7. On the graph from question #6, draw the graph of Horizontal Displacement vs Time that would occur
if air resistance was included.
Transcribed Image Text:Horizontal Displacement (m) +9.8 -9.8 -9.8 D) -9.8 -9.8 -9.8 4. Our equations of motions for projectiles assúme: A) the start point is x = 0 m and y = 0 m. B) the horizontal velocity is a constant. C) there is no friction due to air resistance. D) All of the above. 5. The diagram at the right shows the trajectory of three artillery shells. Each was fired with the same initial speed. Which shell was in the air for the longest time? (Ignore air friction.) A) Shell A. D) Shells A and C were in the air for equal time, which was longer than for shell B. B) Shell B. C) Shell C. 6. A projectile is fired into the air at some angle above the horizontal. The horizontal displacement of the projectile is measured against time in flight and the collected data is shown as a horizontal displacement versus time graph at the right. Based on this graph, the horizontal velocity of the projectile during this time interval is: A) constant. C) decreasing. B) increasing. D) equal to zero. Time (s) 7. On the graph from question #6, draw the graph of Horizontal Displacement vs Time that would occur if air resistance was included.
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