A force is exerted on a 5 kg block to move it across a rough surface, as shown above. The magnitude of the force is initially 5 N, and the block moves at a constant velocity. While the block is moving, the force is instantaneously increased to 12 N. How much kinetic energy does the block now gain as it moves a distance of 2 m?

Block A and Block B move toward each other on a level frictionless track. Block A has a mass and velocity . Block B has a mass and a velocity . The blocks collide, and during the collision the magnitude of the net force exerted on Block A is . What is the magnitude of the net force exerted on Block B, and why does it have that value?

A line graph has time t in seconds on the horizontal axis from 0 to 6 and velocity v in meters per second on the vertical axis from 0 to 5. Straight line segments connect the points (0,0), (2,4), (4,1), and (6,5). The three line segments are labeled 1 on the rising segment, 2 on the falling segment, and 3 on the final rising segment. The graph above shows velocity as a function of time for a  object traveling along a straight line. The graph has three segments labeled 1, 2, and 3. A rope exerts a constant force of magnitude on the object along its direction of motion the whole time. During segment 2 only, a frictional force of magnitude  is also exerted on the object. For another identical object initially at rest, no frictional force is exerted during segment 2 (between and ). A rope exerts the same constant force of magnitude  as in the previous scenario. What is the change in the objects kinetic energy during segment 2?

A line graph has time t in seconds on the horizontal axis from 0 to 6 and velocity v in meters per second on the vertical axis from 0 to 5. Straight line segments connect the points (0,0), (2,4), (4,1), and (6,5). The three line segments are labeled 1 on the rising segment, 2 on the falling segment, and 3 on the final rising segment. The graph above shows velocity as a function of time for a  object traveling along a straight line. The graph has three segments labeled 1, 2, and 3. A rope exerts a constant force of magnitude on the object along its direction of motion the whole time. During segment 2 only, a frictional force of magnitude  is also exerted on the object. Which of the following correctly ranks the displacement for the three segments of the object’s motion?

Why ___ there a hospital close to those villages?

Each of the students ___ to pass the exam.

Many ships in the harbor ___ during the hurricane last year.

The student with the most classes and best grades ___ to try hardest.

Nobody at the store ___ the new window display.

Caring for loved ones ___ an important part of life.