#### Transcript 6. The change of motion of an object depends on _____.

```Teacher instructions
• Students will be watching a video in
http://www.discoveryeducation.com/
The link for the video is on slide 3.
After the video they will answer some
questions related to it.
Directions
Watch the video and answer the questions in
the following slides.
http://player.discoveryeducation.com/index.c
fm?guidAssetId=27DE45E9-9B3D-478EA546D893FC4D2B92&blnFromSearch=1&prod
uctcode=US
1. The velocity of an object is the _____ of the object.
A) speed
B) acceleration
C) speed and direction
D) momentum and weight
2. The tendency of an object at rest to stay at rest and the
tendency of an object in straight-line motion to continue
moving is _____.
A) motion
B) friction
C) inertia
D) momentum
3. The force that slows or prevents movement of objects in
contact with each other is called _____.
A) inertia
B) friction
C) gravity
D) momentum
4. What would happen to a moving object if no unbalanced
force acts upon it?
A) It would eventually come to a stop.
B) It would continue to move at any speed.
C) It would continue to move in any direction.
D) It would continue to move at the same speed in the same
direction.
5. Why do passengers in a car move forward when the car
comes to a sudden stop?
A) inertia
B) gravity
C) friction
D) centripetal force
6. The change of motion of an object depends on _____.
A) only the mass of the object
B) only the size of the force on the object
C) both the mass of the object and the size of the force
D) only the weight of the object and the size of the object
7. Momentum is the product of the mass of an object times
its _____.
A) friction
B) inertia
C) velocity
D) direction
8. For every action, there is an _____ and opposite reaction.
A) active
B) equal
C) energetic
D) unknown
```