Martin rides his bicycle at 1.5 m/s south for 10 minutes, then drives at 3.0 m/s south. His acceleration is calculated as the change in velocity (3.0 - 1.5 = 1.5 m/s) divided by the time (10 seconds), which is 0.15 m/s^2.
Sample Problem:
Martin ridesa bicycle at 1.5 m/s south. Ten minute later, he is
driving at 3.0 m/s south. What is Martin’s acceleration?
Given: Vi = 1.5 m/s t = 10 s
Vf = 3.0 m/s
Solution: a = Vf – Vi = 3.0 m/s – 1.5 m/s = o.15 m/s2
t
10 s
4.
Describe eachcharacteristics of
waves;
Relate amplitude, frequency
wavelength and wave velocity;
Analyzing situations involving
characteristics of waves;
5.
A microwave ovenuses microwaves to
cook food by transferring energy to the
water molecules in the food. Containers that
are water-free, like plastic, usually remain
cool. Wrapping food in aluminum foil will
reflect microwaves and the food will not
cook. Metallic decorations on chinaware are
susceptible to damage.
6.
Is a disturbancetraveling through a medium
or a vacuum.
Wave pulse is a single unrepeated
disturbance
Wave train is a succession of
periodic disturbances
7.
are classified accordingto
nature
wave is either
mechanical
electromagnetic
direction of vibrations
wave is either
transverse
longitudinal
the particles ofthe medium vibrate perpendicular to the
direction of the wave propagation
the particles of the medium vibrate
parallel to the direction of the wave propagation