1. jolt

He drove the car too carefully to make a little jolt.

2. crumple

The man crumpled the table cloth to make it looked as old as having been used for a while.

3. limply

The woman streched out her arm to him limply.

4. splinter

The splinters of the boken glass are dangerous to the baby.

5. lurch

He lurched into the old woman when the bus stopped suddenly.

6. bough

There is a squirrel climbing up the bough quickly and disappearing into the leaves.

7. dent

A dent on the surface of the box tells the buyer it must have been used before.

8. uppercut

The boxer was knocked down directly by a uppercut.

9. lash

The wind lashed the boat and almost blew it upside down.

10. tether

Without the tether, the puppy ran and jumped everywhere happily.

11. clunk

A huge clunk awoke the boy and he was frightened to hide in the quilt.

12. flail

The boys flailed to each other madly.

summary:

The flying car hit a tree which hit them back with its trunks. The car was punched continuously. Just before the boys were attacked directly, the engine of the car restarted. They escaped from the tree's assaulting scope and the car left them on the ground and flew away.