1
Multiple Choice
1.
A particle starts from the origin at
t
= 0 with a velocity of 8.0j
m/s and moves in the
xy
plane with a constant acceleration of
(4.0i + 2.0j) m/s
2
.
At the instant the
x
coordinate of the
particle is 29 m, what is the value of its
y
coordinate?
a. 35 m
b. 39 m
c. 45 m
d. 42 m
e. 29 m
2.
At
t
= 0, a particle leaves the origin with a velocity of 9.0 m/s in
the positive
y
direction and moves in the
xy
plane with a constant
acceleration of (2.0i – 4.0j) m/s
2
.
At the instant the
x
coordinate
of the particle is 15 m, what is the speed of the particle?
a. 10 m/s
b. 16 m/s
c. 12 m/s
d. 14 m/s
e. 26 m/s
3.
A particle starts from the origin at
t
= 0 with a velocity of 6.0i
m/s and moves in the
xy
plane with a constant acceleration of
(–2.0i + 4.0j) m/s
2
.
At the instant the particle achieves its
maximum positive
x
coordinate, how far is it from the origin?
a. 36 m
b. 20 m
c. 45 m
d. 27 m
e. 37 m
4.
A particle leaves the origin with a velocity of 7.2 m/s in the
positive
y
direction and moves in the
xy
plane with a constant
acceleration of (3.0i – 2.0j) m/s
2
.
At the instant the particle moves
back across the
x
axis (
y
= 0), what is the value of its
x
coordinate?
a. 65 m
b. 91 m
c. 54 m
d. 78 m
e. 86 m
5.
At
t
= 0 a particle leaves the origin with a velocity of 5.0 m/s
in the positive
y
direction.
Its acceleration is given by a =
(3.0i – 2.0j) m/s
2
.
At the instant the particle reaches its
maximum
y coordinate how far is the particle from the
origin?
a. 11 m
b.
16 m
c. 22 m
d. 29 m
e. 19 m
6.
A particle moves in the
xy
plane with a constant acceleration
given by a = –4.0j
m/s
2
.
At
t
= 0 its position and velocity are
10i m and (–2.0i
+ 8.0 j) m/s, respectively.
What is the
distance from the origin to the particle at
t
= 2.0 s?
a. 6.4 m
b. 10 m
c. 8.9 m
d. 2.0 m
e. 6.2 m
7.
A particle starts from the origin at
t
= 0 with a velocity of (16i –
12j) m/s and moves in the
xy
plane with a constant acceleration of
a = (3.0i – 6.0j) m/s
2
.
What is the speed of the particle at
t
= 2.0
s?
a. 52 m/s
b. 39 m/s
c. 46 m/s
d. 33 m/s
e. 43 m/s
8.
At
t
= 0, a particle leaves the origin with a velocity of 12 m/s in
the positive
x
direction and moves in the
xy
plane with a constant
acceleration of (–2.0i + 4.0j) m/s
2
.
At the instant the
y
coordinate
of the particle is 18 m, what is the
x
coordinate of the particle?
a. 30 m
b. 21 m
c. 27 m
d. 24 m
e. 45 m
9.
At
t
= 0, a particle leaves the origin with a velocity of 12 m/s
in the positive
y
direction and moves in the
xy
plane with a
constant acceleration of (2.0i – 4.0j) m/s
2
.
At the instant the
particle moves back across the
x
axis (
y
= 0), what is the speed
of the particle?
a. 16 m/s
b. 17 m/s
c. 18 m/s
d. 14 m/s
e. 22 m/s
10. The initial speed of a cannon ball is 0.20 km/s.
If the ball is to
strike a target that is at a horizontal distance of 3.0 km from
the cannon, what is the minimum time of flight for the ball?
a. 16 s
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
This is the end of the preview. Sign up
to
access the rest of the document.
 Spring '09
 Physics, Acceleration, Velocity, m/s, race car

Click to edit the document details