Hello everybody I am a student and I struggle with physics a lot . I am having trouble understanding the topic about force and time. I do not really understand how a force needs time to change speed, and how to apply this in exercises. I also find braking time, braking distance, and deceleration difficult, especially in graphs. Can anyone help me with that? Does anyone also have a PowerPoint about the chapter force for about let’s say grade 9.

I’ll go first! I’m Kelley! I’ve got a PhD in physics education research, and I teach math and AP physics. I made this community to gather folks who like physics and who want to learn physics! I like fiber arts of all types (sewing, crochet, knitting, etc). What about you!?