A girl and a boy are riding on a merry-go-round that is turning at a constant rate. The girl is near the outer edge, and the boy
1 answer:
Answer:
A. Both the girl and the boy have the same nonzero angular displacement.
Explanation:
Since girl and boy both are standing on the same merry go round so here we can say that boy and girl both will revolve with same angular speed as the speed of the merry go round
so the angular displacement is given as
so here since both has same angular speed that is the speed of the disc so they both will turn by same angle in the same interval of time
So we have correct answer as
A. Both the girl and the boy have the same nonzero angular displacement.
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Answer:
a) u = 30.29 m/s
b) t = 2.09 s
Explanation:
given,
velocity = 45 m/s
angle (θ) = 50°
horizontal velocity = 45 cos 50°
time taken to reach 150 m.
times =
t = 5.19 s
a) height of arrow
s = 46.78 m
v² - u² = 2 g s
u² = 2 × 9.81 × 46.78
u = 30.29 m/s
b) time taken by the apple =
= 3.09 s
time after which it has to be thrown = 5.19-3.09 = 2.1 s
Answer:0.27
Explanation:
Given
One worker Pushes with force
other Pulls it with a rope of rope
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both forces are horizontal and crate slides with a constant speed
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where is the coefficient of static friction