How things work college course/Conceptual physics wikiquizzes/Velocity and acceleration

This diagram shows how to connect the directions with the xy coordinate system. Intended to facilitate problem solving for people with orientation dyslexia.

Point added for a correct answer:
Points for an incorrect answer:
Ignore the questions' coefficients:

1 When a table cloth is quickly pulled out from under dishes, they hardly move. This is because

	the cloth is more slippery when it is pulled quickly
	the cloth is accelerating for such a brief time that there is little motion
	objects don't begin to accelerate until after the force has been applied

2 A car is traveling west and slowing down. The acceleration is

	zero
	to the east
	to the west

3 A car is traveling east and slowing down. The acceleration is

	zero
	to the east
	to the west

4 A car is traveling east and speeding up. The acceleration is

	to the east
	to the west
	zero

5 If you toss a coin into the air, the acceleration on the way up is

	down
	zero
	up

6 A car is traveling in a perfect circle at constant speed. If the car is headed north while turning west, the acceleration is

	west
	zero
	south
	north
	east

7 A car is traveling in a perfect circle at constant speed. If the car is headed north while turning east, the acceleration is

	east
	south
	north
	zero
	west

8 As the Moon circles Earth, the acceleration of the Moon is

	away from Earth
	towards Earth
	opposite the direction of the Moon's velocity
	in the same direction as the Moon's velocity
	zero

9 If you toss a coin into the air, the acceleration on the way down is

	up
	down
	zero

10 If you toss a coin into the air, the acceleration while it as its highest point is

	up
	down
	zero

11 If you toss a coin into the air, the velocity on the way up is

	zero
	down
	up

12 If you toss a coin into the air, the velocity on the way down is

	down
	zero
	up

13 If you toss a coin into the air, the velocity while it as its highest point is

	up
	zero
	down

14 A car is headed due north and increasing its speed. It is also turning left because it is also traveling in a perfect circle. The acceleration vector points

	northwest
	south
	southwest
	north
	northeast

15 A car is headed due north and increasing its speed. It is also turning right because it is also traveling in a perfect circle. The acceleration vector points

	southwest
	south
	northwest
	north
	northeast

16 A car is headed due north and increasing its speed. It is also turning left because it is also traveling in a perfect circle. The velocity vector points

	northeast
	southeast
	northeast
	northwest
	north

17 A car is headed due north and increasing its speed. It is also turning right because it is also traveling in a perfect circle. The velocity vector points

	north
	northwest
	south
	northeast
	southwest

18 A car is headed due north and decreasing its speed. It is also turning left because it is also traveling in a perfect circle. The acceleration vector points

	west
	northwest
	southwest
	southeast
	south

19 A car is headed due north and decreasing its speed. It is also turning right because it is also traveling in a perfect circle. The acceleration vector points

	northwest
	north
	south
	northeast
	southeast