B. frictional
C. centrifugal
D. gravitational
Answer:
frictional
Explanation:
The time for the ball to reach the bottom of the ramp is 5 seconds. Using this time value, the acceleration, and the initial velocity, you can calculate the length of the ramp, which is found to be 125 cm.
The question involves the physics principles of kinematics, specifically the concept of acceleration. Given that the initial velocity is 0 cm/s, the final velocity is 50 cm/s, and the acceleration is 10 cm/s^2, you can find the time it took for the ball to reach the bottom using the formula vf=vi+at (Final velocity = initial velocity + acceleration * time). Substituting the given values, you get the equation 50cm/s = 0cm/s + 10cm/s^2 * time, simplifying which gives time = 5 seconds.
To find the length of the ramp, you can use another kinematic equation, d = vit + 0.5at^2 (Distance = initial velocity * time + 0.5 * acceleration * time^2). Substituting the values we know, (initial velocity = 0, acceleration = 10 cm/s^2, time = 5 s), the equation simplifies to d = 0*5 + 0.5*10*5^2 = 0 + 0.5*10*25 = 125 cm. Therefore, the length of the incline or ramp is 125 cm.
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all planets look as though they lie along a flattened circular plane or disk
the Sun and planets rotate in the same direction
all moons orbit planets in a counterclockwise direction
Our solar system is made up of an ordinary star known as the Sun. All moons orbit planets in a counterclockwise direction are not one of the observed characteristics of our solarsystem.
Our solar system is made up of an ordinary star known as the sun, as well as the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
It contains the planets' satellites, as well as countless comets, asteroids, and meteoroids, as well as the interplanetarymedium.
When viewed from the Northpole or the North star Polaris, the Moon and all other typical non-asteroid size moons in our solar system orbit their host planet in a counter-clockwise manner.
To learn more about the solar system refer to the link;
The answer is: all moons orbit planets in a counterclockwise direction