2Dhttp:www.moviefone.commoviestartrek29301videostartrektrailerno2hd2330075'Star Trek' Trailer No. 2

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... star-trek/29301/video/star-trek-trailer-no-2-hd/2330075/'Star Trek' - Trailer ... If a ball is thrown with a velocity of 25 m/s at an angle of 37 above the ... – PowerPoint PPT presentation

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Title: 2Dhttp:www.moviefone.commoviestartrek29301videostartrektrailerno2hd2330075'Star Trek' Trailer No. 2

1
2Dhttp//www.moviefone.com/movie/star-trek/29301/v
ideo/star-trek-trailer-no-2-hd/2330075/'Star
Trek' - Trailer No. 2 HD/2330075 Kinematics

1. If a ball is thrown with a velocity of 25 m/s
at an angle of 37ø above the horizontal, what is
the horizontal component of the velocity?
a. 15 m/s
b. 18 m/s
c. 20 m/s---correct
d. 25 m/s

2
2D Kinematics

2. Two vectors A and B have components (0, 1) and
(-1, 3), respectively. What is magnitude of the
sum of these two vectors?
a. 2.8
b. 3.2
c. 3.9
d. 4.1---correct

3
2D Kinematics

3. If vector A (-3.0 ,- 4.0), and vector B
(3.0 ,-8.0), what is the magnitude of vector C
A - B?
a. 13
b. 16
c. 144
d. 7.2---correct

4
2D Kinematics

4. A stone is thrown horizontally with an initial
speed of 10 m/s from the edge of a cliff. A stop
watch measures the stone's trajectory time from
the top of the cliff to the bottom to be 4.3 s.
What is the height of the cliff?
a. 22 m
b. 43 m
c. 77 m
d. 91 m---correct

5
2D Kinematics

5. A jumper in the long-jump goes into the jump
with a speed of 11 m/s at an angle of 20ø above
the horizontal. How far does the jumper jump?
a. 7.8 m
b. 7.9 m---correct
c. 8.0 m
d. 8.1 m

6
2D Kinematics

6. A ball is thrown with a velocity of 20 m/s at
an angle of 60ø above the horizontal. What is
the horizontal component of its instantaneous
velocity at the exact top of its trajectory?
a. 10 m/s---correct
b. 17 m/s
c. 20 m/s
d. zero

7
2D Kinematics

11. A ball thrown horizontally from a point 24 m
above the ground, strikes the ground after
traveling horizontally a distance of 18 m. With
what speed was it thrown?
a. 6.1 m/s
b. 7.4 m/s
c. 8.1 m/s---correct
d. 8.9 m/s

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