A car driving 55 miles per hour south.

A bicyclist traveling 10 meters per hour toward the next town.

A roller coaster is traveling 10 meters per second.

A rocket blasting off at 2,500 meters per second toward space.

A car driving 55 miles per hour south.

A bicyclist traveling 10 meters per hour.

A roller coaster is traveling 10 meters per second.

A rocket blasting off at 2,500 meters per second.

Yes, this is acceleration since the swimmer starts to speed up to pull ahead.

Yes, this is acceleration since the swimmer uses the wall to change directions.

No, this is not acceleration since there is no speeding up, slowing down, or change in direction.

10 N

20 N

30 N

0 N

Add up all the arrows

Add a green arrow and the orange arrow.

Subtract all the arrows.

Add the green arrows and subtract the orange arrow.

Balanced

Unbalanced

1

2

3

All of the above

A rocket taking off from Earth

A crash test dummy flies through the windshield in a collision

A small rock skips on a pond faster than a large rock

A rocket taking off from Earth

A crash test dummy flies through the windshield in a collision

A small rock skips a pond faster than a large rock

point W

point X

point y

point z

W

X

Y

Z