Mon 6:17 PM Window Help FF Chapter_2_Kinematics_Discu...QSearch in Document Share Insert Draw Design Layout References Mailings Review View Times New.fv 12 vA'A' Aav A) :-v-va-v ーー 2↓ T Av slowing down maintaining a constant velocity 16. As a roller coaster starts down a hill, its speed is 3 m/s. However, 5 seconds later, at the 17. A car is traveling in a straight line along a highway at a speed of 20 m/s. The driver steps bottom, its speed is 28 m/s. Calculate its average acceleration. on the gas pedal and, 3 seconds later, the car's speed is 32 m/s. Find the average acceleration of the car Acceleration as a Vector Quantity Acceleration, like velocity, is a vector quantity. To fully describe the acceleration of an object, one must describe the direction of the acceleration vector. A general rule of thumb is that if the object is moving and slowing down, then the acceleration is in the opposite the direction the object is moving. If the object is speeding up, the acceleration directio is the same as the direction of motion. in a straight line Read the following statements and indicate the direction (up, down, right, left, east, west, north, south) of the acceleration vector a. A car is moving eastward along Penn Avenue an increasing its speed from 25 mph to 45 mph. b. A northbound car skids to a stop to avoid a wreck. c. An Olympic diver slows down after splashing into the water. d. A southward-bound free kick delivered by the opposing team is stopped by the goalie e. A downward falling parachutists pulls the chord and rapidly slows down. f. A rightward moving Hot Wheels car speeds up & A falling bungee-jumper slows down as she nears the concrete sidewalk below h. The bungee-jumper from the previous question speeds up as she is snapped back toward her starting location by the bungee-chord. 19. The diagram to the right portrays a toy car Page 5 of 7 1821 words English (United States) Focus E} 个→