Mass and weight
Does air have mass YES OR NO
YES
kilometer
10^3 or k
3.0g/1kgxx1kg/10^3g=
3.0x10^-3kg
When do we use scientific notation for?
To represent very large or very small numbers.
What is the SI unit for energy?
joules
Define weight
A measure of force that is equal to the gravitational pull.
10^-6
micro
How many kg in 12980 g?
12.980 kg
Express 150,000,000 in scientific notation
1.5 x10^7
What is potential energy?
stored energy dependent upon the position of the object.
If you weigh 180 pounds on earth, how much will you weigh on the moon?
30 pounds
mega
M
How many meters are in 3.7 km?
3700 m
Express 0.000043 in scientific notation.
4.3x10^-5
What is the mathematical equation for kinetic energy?
KE=1/2 m v^2
How is gravity on earth different than that on the moon?
An object weighs 6 times more on earth than it does on the moon.
hecto
h
What is dimensional analysis?
A technique that uses the units of the measurement in order to correctly solve problems.
Express 0.000000000673 in scientific notation.
6.73x10^9
What is kinetic energy?
The energy that it possesses due to its motion
Define mass
A measure of the amount of matter that an object contains.
milli
10^-3 or m
What is a conversion factor?
A ratio of equivalent measurements.
What is the leading zero.
the zero to the left of the decimal point
What is an example of kinetic energy?
any object in motion