Question 1 (1 point)
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the path a projectile takes is known as the
question 1 options:
vertical component
trajectory
horizontal component
parabola
question 2 (1 point)
saved
which of the following is not an example of a projectile?
question 2 options:
a baseball that has been pitched
a rock being thrown over a bridge
a person sitting in a chair, not moving
a car driving off a cliff
question 3 (1 point)
saved
a plane is flying east when it drops some supplies to a designated target below. the supplies land after falling for 10 seconds. how high above the ground was the airplane when the supplies were dropped? (hint: d = 1/2gt2; g = -9.8 m/s2)
question 3 options:
120 meters
490 meters
980 meters
49 meters
question 4 (1 point)
as the supplies fell, they traveled 650 meters horizontally. how fast were the supplies and the airplane moving forward? remember that it took 10 seconds for them to reach the ground. (hint: v = d/t)
question 4 options:
65 m/s
6500 m/s
0.154 m/s
660 m/s
question 5 (1 point)
saved
a projectile has a vertical component and a horizontal component.
question 5 options:
true
false
question 6 (1 point)
saved
the shape of a projectile's trajectory is an ellipse.
question 6 options:
true
false
question 7 (1 point)
saved
which of the following is not true about a vertical component?
question 7 options:
the vertical component of a projectile changes due to gravity.
the vertical component acts the same as an object in free fall.
the vertical component always equals the horizontal component.
question 8 (1 point)
saved
during the course of trajectory, the horizontal component of the velocity is
question 8 options:
constant
increasing
decreasing
negative
question 9 (1 point)
saved
in the simulation above, as the projectile travels upward, how does the vertical velocity change?
question 9 options:
vertical velocity remains the same.
vertical velocity decreases.
vertical velocity increases.
vertical velocity is zero.
question 10 (1 point)
in the simulation above, as the projectile travels downward, how does the vertical velocity change?
question 10 options:
vertical velocity remains the same.
vertical velocity decreases.
vertical velocity is zero.
vertical velocity increases.
Answers: 3
Physics, 21.06.2019 18:00
Which two objects have the greatest gravitational force acting between them
Answers: 1
Physics, 21.06.2019 23:00
How many dots must be added to the symbol to properly represent a standard nitrogen ion? a) 1 b) 3 c) 5 d) 8
Answers: 1
Physics, 22.06.2019 10:40
As you are trying to move a heavy box of mass m, you realize that it is too heavy for you to lift by yourself. there is no one around to , so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. you pull up on the rope to lift the box. use g for the magnitude of the acceleration due to gravity and neglect friction forces. once you have pulled hard enough to start the box moving upward, what is the magnitude f of the upward force you must apply to the rope to start raising the box with constant velocity? express the magnitude of the force in terms of m, the mass of the box.
Answers: 1
Physics, 22.06.2019 11:30
If the textbook weighs 19.6 newtons on venus,what is the strength of gravity on venus?
Answers: 1
Question 1 (1 point)
saved
the path a projectile takes is known as the
que...
saved
the path a projectile takes is known as the
que...
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