2. A block of mass M is sliding down a frictionless incline with an unknown angle 0, traveling a distance of 10 meters in 20 seconds with an average velocity of 6 meters per second. The only thing that is affecting the mass is gravity. Find the value of the angle 0 in degrees. Hint: Use the kinematic equation and figure out the relationship between acceleration, gravity, and the angle. m 9 = 9.8 0.5 V = Ay At 16 20

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!