Question

A
large
cannon
is
fired
from
ground
level
over
level
ground
at
an
angle
of
30
°
above
the
horizontal
.
The
muzzle
speed
is
980m
/
s
.
Neglecting
air
resistance
,
the
projectile
will
travel
what
horizontal
distance
before
striking
the
ground
?
III. The veld
A. III only
B. I and II only
C. I and Ill only
D. ll and Ill only
E I, II, III
sult in the
B. 8.5km
A. 4.3km
nd?
ionic
B. 40m
ngth?
A. 10 m
A. 40m
C. 43km D. 85km E. 170km
A boy on the edge of a vertical cliff 20m high throws a stone horizontally outward with a speed of
20m/s. It strikes the ground at what horizontal distance from the foot of the cliff? Use g = 10m/s?
C. 50m
D. 50v5m E none of these
A projectile is fired from ground level over level ground with an initial velocity that has a
vertical component of 20m/s and a horizontal component of 30m/s. Using g = 10 m/s2, the
distance from launching to landing points is:
B. 60m
C. 80m
D. 120m E. 180m
An object is moving on a circular path of radius i meters at a constant speed of 4.0m/s. The
time required for one revolution is:
A. 2/7's
B. 112/25 C. r/
2s D. 71/4 E. 2/rts
A particle moves at constant speed in a circular path. The instantaneous velocity and
instantaneous acceleration vectors are:
A. both tangent to the circular path B. both perpendicular to the circular path
C. perpendicular to each other
D. opposite to each other E none of the above
A stone is tied to a string and whirled at constant speed in a horizontal circle. The speed is then doubled
without changing the length of the string. Afterward the magnitude of the acceleration of the stone is:
A. the same
B. twice as great
C. four times as great
D halt as great
E. one-fourth as great
iwo objects are traveling around different circular orhits with
ater​

Answer 1

Answer:

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