Holden is trying to determine the velocity of his race car. He went 20 meters east, turned around, and went 40 meters west. He t
2 answers:
Answer:
3 m /s
Explanation:
Average velocity is defined as the ratio of total displacement to the total time taken. The formula of average velocity is given by
Take east direction is positive and west is negative.
Here the total displacement is
d = 20 - 40 + 35 = 15 m
t = 5 second
Average velocity = 15 / 5 = 3 m/s
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I don’t know what the angle is in your diagram so I used the angle from the vertical.
Explanation:
The given data is as follows.
Mass of the ornament () = 0.9 kg
Length of the wire (l) = 1.5 m
Mass of missile () = 0.4 kg
Initial speed of missile () = 12 m/s
r = 1.5 m
According to the law of conservation of momentum,
Putting the given values into the above formula as follows.
0 + 4.8 = 1.3v
v = 3.69 m/s
Now, the centrifugal force produced is calculated as follows.
=
= 11.80 N
Hence, tension in the wire is calculated as follows.
T =
=
= 24.54 N
Thus, we can conclude that tension in the wire immediately after the collision is 24.54 N.