Uniformly Accelerated Linear Motion: Motion 2

Physics 1: Section 3.2

Position vs time graph: parabola

Negative slope → negative velocity

Decreasing slope → velocity becoming more negative

Concave down parabola → constant, negative acceleration

Velocity vs time graph: straight line

Constant, negative slope → constant, negative acceleration

Acceleration vs time graph: horizontal line

Constant, negative value → constant, negative acceleration

For motion in the positive direction or negative direction:

Speeding up → acceleration in the same direction as the velocity

Slowing down → acceleration in the opposite direction of the velocity

A box is sliding across the floor, but you notice that it is slowing down. What are the surroundings of the box? (Include all surroundings even if we ultimately neglect them.)

Earth, Air, Floor

A box is sliding across the floor, but you notice that it is slowing down. What force is responsible for the box slowing to a stop?

Kinetic friction force

What mathematical property of the graph is equal to the average acceleration?

Slope

A skydiver is falling vertically downward toward the earth with a constant velocity. What can we conclude from this?

The net force on him is zero