m = mass of the roller coaster = 500 kg
h = height of the hill = 80 m
v = speed of the roller coaster at the bottom of the hill = ?
using conservation of energy
kinetic energy at the bottom of the hill = potential energy at the top of hill
(0.5) m v² = m g h
(0.5) v² = g h
inserting the values
(0.5) v² = (9.8) (80)
v = 39.6 m/s
hence the speed at the bottom comes out to be 39.6 m/s
Answer:
7500 m/s
Explanation:
We can use the equation velocity of a wave equals wavelength times frequency. Therefore, v = wavelength*f = (25 m)(300 Hz) = m/s7,500
-244.59meters
Explanation:
The initial position of the object is located at -244.59meters from the origin.
Displacement is the distance from the start to finish of a body.
Final position of the body is at x=-55.25 meters
Amount of displacement is -189.34meters;
let us represent this by a coordinate system in the negative x - direction;
Origin
Start finish 0m
-a -x
-55.25meters
displacement
-189.34meters
Position -a is about 189.34 in left direction from 55.25; this gives: 55.25 + 189.34 = -244.59m in the left direction
learn more:
Displacement brainly.com/question/5461768
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