ASK YOUR TEAC A 1.120-N crate is being pushed across a level floor at a constant speed by a force F of 260 N at an angle of 20.0° below the horizontal, as shown in the figure a below. 20.0 1 20.0° (a). What.is.the coefficient of kinetic friction between the crate and the floor? (Enter your answer to at least three decimal places.) 0.026 Enter a number. (b) If the 260-N force is instead pulling the block at an angle of 20.0° above the horizontal, as shown in the figure b, what will be the acceleration of the crate? Assume that the coefficient of friction is the same as that found in part (a). m/s² Submit Answer Viewing Saved Work Revert to Last Response View Previous Question Question 15 of 19 View Next Question

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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!