2. Each diagram below shows the velocity and acceleration for an object at a certain instant in time. The object is free to move in two dimensions. Acceleration Velocity Instant 1 Instant 2 Instant 3 Instant 4 1 1 For each instant, state whether the object is speeding up, slowing down, or neither (e.g., moving with constant speed). Base your answers on your responses to problem 1.e. 3. The diagram at right illustrates how the acceleration at instant / can be treated as having two components: one perpendicular to the velocity (a) and one parallel to the velocity (a), which is often called tangential acceleration. For each of the other instants, draw a diagram similar to the one given for instant 1. Label the parallel and perpendicular components of the acceleration relative to the velocity. If either component is zero, state so explicitly. Instant 2 Instant 3 V 10 Instant 4 4. For each of the instants 1-4, compare your descriptions of the motion in part 0 with the components of the acceleration in part b. Then answer the following: a. Give a general rule that describes how the component of the acceleration parallel to the velocity affects the motion of an object. b. Give a general rule that describes how the component of the acceleration perpendicular to the velocity affects the motion of an object.

2. Each diagram below shows the velocity and acceleration for an object at a certain instant in time. The object is free to move in two dimensions. Acceleration Velocity Instant 1 Instant 2 Instant 3 Instant 4 1 1 For each instant, state whether the object is speeding up, slowing down, or neither (e.g., moving with constant speed). Base your answers on your responses to problem 1.e. 3. The diagram at right illustrates how the acceleration at instant / can be treated as having two components: one perpendicular to the velocity (a) and one parallel to the velocity (a), which is often called tangential acceleration. For each of the other instants, draw a diagram similar to the one given for instant 1. Label the parallel and perpendicular components of the acceleration relative to the velocity. If either component is zero, state so explicitly. Instant 2 Instant 3 V 10 Instant 4 4. For each of the instants 1-4, compare your descriptions of the motion in part 0 with the components of the acceleration in part b. Then answer the following: a. Give a general rule that describes how the component of the acceleration parallel to the velocity affects the motion of an object. b. Give a general rule that describes how the component of the acceleration perpendicular to the velocity affects the motion of an object.