Motion and Forces
A quantity that includes both magnitude and direction.
Vector
The energy an object has because of its motion.
Kinetic Energy
The type of wave where particles vibrate parallel to the direction of motion.
Longitudinal
Electrical outlets in homes are wired this way so devices still work if one fails.
Parallel
The large, slow-moving radioactive particle used in smoke detectors. These particles can be blocked by paper.
Alpha particle
The force that opposes sliding between two surfaces that are touching.
friction
If an object’s speed doubles, its kinetic energy changes by what factor?
4x
The property of a sound wave that determines loudness.
Amplitude
Turning on a light switch does this to a circuit.
Closes the circuit
The process of splitting heavy nuclei into lighter nuclei.
Fission
An object speeds up from 0 m/s to 50 m/s in 2 seconds. What is its acceleration?
25 m/s2
A 5 kg medicine ball moving at 2 m/s has this much kinetic energy.
10 J
A wave has a period of 0.25 seconds. Find the frequency.
4 Hz
A bulb has 3 A of current and 1.5 Ω resistance. Find voltage.
4.5 V
With each radioactive half-life, this fraction of the remaining sample decays.
one half
A 200 kg rocket accelerates at 50 m/s². Find the force.
10,000 N
A 55 kg box is 8 meters above the ground. What is its gravitational potential energy?
4400 J
A wave travels at 30 m/s and has a frequency of 10 Hz. Find the wavelength.
3 m
A resistor has 1.8 V across it and a resistance of 3 Ω. Find the current.
0.6 A
Unlike chemical reactions, nuclear reactions can change an atom into this.
A different element
A a 10 kg bike moves at a constant velocity of 5 m/s. What is the net force acting on the bike?
0N
A 55 kg box is 8 meters above the ground. What is its gravitational potential energy?
The electromagnetic waves with the longest wavelength.
Radio waves
A toaster uses 120 V and 4 A of current. Find its resistance.
30 ohms
What are the symbols for alpha and beta particles
42He
01e-