3.8 Impulse and Force-Time Graphs

Pre-reading question: (multiple choice)
If a raw egg is thrown as hard as possible at a wall, it will break. What will happen if it is thrown just as hard at a loose bed sheet?

a. It will break
b. It won’t break
c. It might break (depends on the thrower)
d. Breaking eggs is wasteful and we shouldn’t do it

And now an experiment:

Videos:

Impulse

Force-time graphs

Post-reading question: 

Extra Practice:

A 5-kg block is released from rest and slides 10 meters down a frictionless ramp inclined at 30 degrees.

•Determine the normal force.

•Sketch an Energy-position graph for the block. Label the PE, KE, and TME (total mechanical energy).

•What is the speed of the block when it reaches the bottom of the ramp?

Advertisements
This entry was posted in 3. Energy and Momentum. Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s