The slope of a tangent line on a velocity vs. Solution: It is obvious that the object's velocity increases over time. (d) the velocity decreases but the acceleration increases. (c) the velocity increases but the acceleration decreases. (b) the velocity and acceleration are decreasing. (a) the velocity and acceleration are increasing. Over time, which of the following is correct? Problem (2): The velocity-versus-time graph of a moving object is shown in the figure below. The final part (the red curve) also has positive slopes but increases in angles, implying that all velocities are increasing in magnitude and positive as well.īased on these explanations, it can be concluded that option (d) is correct. The object continues to move at the same velocity as in the last second of the previous part. The middle part (the red straight line) has a constant slope in its time interval, indicating that the velocity must be constant during this time interval. Throughout this time interval, all slopes have acute angles and are decreasing, suggesting that velocities are negative and decreasing in magnitude. In the first part (the blue curve), the slope at the starting point, which represents the initial velocity $v_0$, has an acute angle, indicating $v_0>0$. Notice that these angles are measured relative to the positive $x$-axis. Slopes with an acute angle ($\alpha90^\circ$) show a negative velocity. The slope of a tangent line at each point of an $x-t$ curve gives the velocity of the object. The motion consists of three parts: two curves and one straight line. Solution: You can see similar questions to this one in all AP Physics kinematics practice problems, so we examine this more accurately. Which of the following graphs is the corresponding velocity vs. time graph for a moving object along the $x$ axis is shown in the figure below. For each section of kinematics, you can find here an answered multiple-choice question. AP Physics 1: Kinematics Practice Problems with AnswersĪ complete set of multiple-choice questions about kinematics appearing in the AP Physics 1 exam is gathered here.
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