There are several resources available online that provide videos on motion in a straight line. Here are a few options:

1. Khan Academy: Khan Academy offers a comprehensive video course on physics, which includes a section on one-dimensional motion. You can find their videos on motion in a straight line on their website or YouTube channel.

2. Physics Classroom: Physics Classroom is a website that provides educational resources for physics students. They have a series of videos called "Physics in Motion" that cover various topics, including motion in a straight line.

3. Crash Course Physics: Crash Course is a popular YouTube channel that offers entertaining and informative videos on various subjects. Their physics series includes videos on one-dimensional motion, which can be helpful for understanding the topic.

As for chemistry class 11 notes, questions, and videos, there are several platforms that provide comprehensive resources for this subject. Some popular options include:

1. TopperLearning: TopperLearning is an online learning platform that offers study materials, video lessons, and practice questions for Class 11 Chemistry. They have a vast collection of videos that cover various topics in detail.

2. Vedantu: Vedantu is an online tutoring platform that offers live classes, recorded lessons, study materials, and practice questions for Class 11 Chemistry. They have experienced teachers who conduct interactive sessions to help students understand the subject better.

3. LearnCBSE: LearnCBSE is a website that provides free study materials, notes, and practice questions for CBSE students. They have a dedicated section for Class 11 Chemistry, which includes video lessons on various topics.

These are just a few examples of the many resources available online for Class 11 Chemistry. It's always a good idea to explore multiple platforms and choose the ones that suit your learning style and needs.