At time t = 0 an object is traveling to the right along the +x axis at a speed o

Question

At time t = 0 an object is traveling to the right along the +x axis at a speed of 10.0 m/s with acceleration -2.0 m/s^2. Which statement is true? The object will slow down, eventually coming to a complete stop. The object cannot have a negative acceleration and be moving to the right. The object will continue to move to the right, slowing down but never coming to a complete stop. The object will slow down, momentarily stopping, then pick up speed moving to the left. A ball is thrown straight up. What are the velocity and acceleration of the ball at the highest point in its path? v = 0, a = 0. v = 0, a = 9.8 m/s^2 up. v = 0, a = 9.8 m/s^2 down v = 9.8 m/s up, a = 0. v = 9.8 m/s down, a = 0. You drop a rock off a bridge. When the rock has fallen 4 m, you drop a second rock. As the two rocks continue to fall, what happens to their velocities? Both increase at the same rate. The velocity of the first rock increases faster than the velocity of the second. The velocity of the second rock increases faster than the velocity of the first. Both velocities stay constant. You drive 4 km at 30 km/h and then another 4 km at 50 km/h. What is your average speed for the whole 8-km trip? More than 40 km/h. Equal to 40 km/h. Less than 40 km/h. Not enough information. All of the above. A car travels along the x axis with increasing speed. We don't know if to the left or the right. Which of the graphs in Fig. 2-34 most closely represents the motion of the car?

Explanation / Answer

3) option d is correct. The object will slow down as the acceleration is towards left and initial velocity is towards right. After stoping it will speed up towards left as now velocity and acceleration both are in left.

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