Question

a force that opposes motion between objects that are touching is called...
1 acceleration
2 friction
3 motion
4 velocity

Explanation:

To solve this, we analyze each option:

• Acceleration is the rate of change of velocity, not a force opposing motion.
• Friction is defined as a force that opposes motion between objects in contact (touching).
• Motion is the change in position, not a force.
• Velocity is the speed with direction, not a force opposing motion.

Answer:

1. friction