At what angle relative to the horizontal should a 52 m curve be banked if the road is covered with ice (no friction) to prevent
1 answer:
Answer:
The banking angle of the road is 15.8⁰.
Explanation:
Given;
radius of the curved road, r = 52 m
velocity of the traveling car, v = 12 m/s
acceleration due to gravity, g = 9.8 m/s²
let the banking angle of the road = θ
The banking angle of the road is calculated as;
Therefore, the banking angle of the road is 15.8⁰.
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Answer:
The final velocity of the runner at the end of the given time is 2.7 m/s.
Explanation:
Given;
initial velocity of the runner, u = 1.1 m/s
constant acceleration, a = 0.8 m/s²
time of motion, t = 2.0 s
The velocity of the runner at the end of the given time is calculate as;
where;
v is the final velocity of the runner at the end of the given time;
v = 1.1 + (0.8)(2)
v = 2.7 m/s
Therefore, the final velocity of the runner at the end of the given time is 2.7 m/s.
Answer:
Explanation:
The density of a material is given by:
(1)
Where:
is the mass of the cube
is the volume of the cube
Now, the volume of a cube is equal to the length of its edge to the power of 3:
(2)
If we know , the volume of this cube is:
(3)
Substituting (3) in (1):
(4)
This is the density of the cube