Data Sheet

-125-
327. Weight
Replace the switch (62) with the press switch (61) in project #317.
Press the press switch (61) and you will hear the sounds of a police
siren from the speaker (93). Also, you will see the heart LED (69) is
ashing at the same time. Weight is different than mass. Weight is
based on the gravitational pull on an object. Mathematically, weight and
mass are related through the formula Weight = mass*g, where g is the
gravitational acceleration due to the Earth.
328. Velocity
Connect points C and D with a 4-wire (4) in project #327. Press the
press switch (61) and you will hear gun shots and the heart LED (69)
will ash at the same time. Velocity is the speed of an object in a certain
direction. In the International System of Units, which is the modern-
day form of the metric system, velocity is measured in meters/second
(m/s).
329. Acceleration
Connect points A and B with the 4-wire (4) in project #327. Press the
press switch (61) and you will hear a re siren and the heart LED (69)
will ash at the same time. Acceleration is the rate of change of velocity
and is measured in m/s
2
.
330. Gravitational Acceleration
Connect points E and F with a 4-wire (4) in project #327. Press the
press switch (61) and the sounds of space battle will turn on with the
heart LED (69) will ash at the same time. Gravitational acceleration
is the acceleration on an object due to the Earth’s gravitational eld. It
can vary based on your location, but roughly speaking the gravitational
acceleration when you are near earth is 9.8 m/s
2
.
331. Kinetic Energy
Connect points G and H with a 4-wire (4) in project #327. Press the
press switch (61) and you will hear music and the heart LED (69) will
ash to the music. An object in motion possesses energy. Kinetic Energy
is the work that is required to bring this object to rest. Kinetic energy
is dened as E
k
= mv
2
/2.
+
–
[ 327 - 331 ]