Transcript August 28/29

August 27
AP physics
In:
A rock is dropped off a cliff and strikes
the ground with an impact velocity of
30 m/s. How high was the cliff?
a) 15 m
b) 20 m
c) 30 m
d) 45 m
e) 60 m
Objective:
To begin our study of 2
dimensional motion.
Homework check
2 dimensional motion
Must be solved using vectors
 Displacement vectors
 Velocity vectors
 Acceleration vectors
 Force vectors
Combining vectors

Only the same type of vector can be
combined.
Components of vectors
Vector problem set
Out:
A sailboat is heading due west at
10 m/s. The wind is blowing at
5 m/s to the north. What is the
actual velocity of the boat?