Question 16
Brake systems work by:
Question 17
Which pendulum takes less time to make one complete back-and-forth swing?


Question 18
If 2 + x 15, what's the value of x?
Question 19
A meter consists of:
Question 20
A stack of lumber is 6-feet high. If each piece of lumber is 4-inches thick, how many pieces of lumber are in the stack?
