Exam 2: Describing Motion: Kinematics in One Dimension

A car is 200 m from a stop sign and traveling toward the sign at 40.0 m/s. If the driver realizes they must stop the car at this time. It takes 0.20 s for the driver to apply the brakes. What must the constant acceleration of the car be after the brakes are applied so that the car would come to rest at the stop sign?

The slope of a tangent line at a given time value on a velocity versus time graph gives

Arthur and Betty start walking toward each other when they are 100 m apart. Arthur has a speed of 3.0 m/s and Betty has a speed of 2.0 m/s. How long does it take for them to meet?

FIGURE 2-11 -Fig. 2-11 represents the position of a particle as it travels along the x-axis. What is the average speed of the particle between t = 1 s and t = 4 s?

A airplane that is flying level needs to accelerate from a speed of 200 m/s to a speed of 240 m/s while it flies a distance of 1200 m. What must the acceleration of the plane be?

FIGURE 2-7 -Fig. 2-7 represents the velocity of a particle as it travels along the x-axis. In what direction is the acceleration at t = 3.0 s?

A runner maintains constant acceleration after starting from rest as she runs a distance of 60.0 m. The runner's speed at the end of the 60.0 m is 9.0 m/s. How much time did it take the runner to complete the 60.0 m distance?

FIGURE 2-6 -Fig. 2-6 represents the position of a particle as it travels along the x-axis. What is the average speed of the particle between t = 2 s and t = 4 s?

An object starts from rest at time t = 0.00 s and moves with constant acceleration. The object travels 3.00 m from time t = 1.00 s to time t = 2.00 s. What is the acceleration of the object?

FIGURE 2-11 -Fig. 2-11 represents the position of a particle as it travels along the x-axis. What is the magnitude of the average velocity of the particle between t = 1 s and t = 4 s?

A man walks south at a speed of 2.00 m/s for 15.0 minutes. He then turns around and walks north a distance 2000 m in 15.0 minutes. What is the average speed of the man during his entire motion?

A car starts from rest and accelerates with a constant acceleration of 1.00 m/s² for 3.00 s. The car continues for 5.00 s at constant velocity. How far has the car traveled from its starting point?

Two objects are dropped from a bridge, an interval of 1.00 s apart. What is their separation 1.00 s after the second object is released?

The acceleration of an object as a function of time is given by a(t) = (3.00 m/s³)t. If the object has a velocity 1.00 m/s at time t = 1.00 s, what is the displacement of the object between time t = 2.00 s and time t = 4.00 s?

During the time that the acceleration of a particle is constant, its velocity-vs.-time curve is

An object is moving with constant non-zero velocity on the +x axis. The velocity versus time graph of this object is

Abby throws a ball straight up and times it. She sees that the ball goes by the top of a flagpole after 0.50 s and reaches the level of the top of the pole after a total elapsed time of 4.10 s. What was the speed of the ball at as it passed the top of the flagpole?

FIGURE 2-8 -Fig. 2-8 shows the velocity-versus-time graph for a basketball player traveling up and down the court in a straight-line path. Find the net displacement of the player for the 10 s shown on the graph.

A ball is dropped from somewhere above a window that is 2.00 m in height. As it falls, it is visible to a person looking through the window for 200 ms as it passes by the 2.00 m height of the window. From what height above the top of the window was the ball dropped?