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

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