Mechanical Energy
역학적 에너지
역학적 에너지
Sports
Power Consumption
전력 소비량
전력 소비량
Songs
Energy (No Calculation)
100
Mechanical energy = ___ energy + ___ energy
Potential energy + Kinetic energy
100
Name 5 sports played by teams of 3 or more people
e.g. soccer, basketball, baseball, volleyball, handball
100
How do you read the unit of power, W?
Watt
100
Read the lyrics and guess the song title.
Waited so long to break these walls down
To wake up and feel like me
Put these patterns all in the past now
And finally live like the girl they all see
No more hiding, I'll be shinin' like I'm born to be
'Cause we are hunters, voices strong, and I know I believe
Golden
100
An object with a velocity of 0 (an object at rest) has 0 ___ energy.
Kinetic energy
200
A 1 kg ball is at rest 10 m above the reference level. What is its mechanical energy?
98 J
200
Who is the Korean figure skating legend who won the women’s singles gold medal at the 2010 Vancouver Winter Olympics?
Kim Yuna 
200
A 5 W product is used for 10 seconds. How much electrical energy does it use? (Include the unit.)
50 J
200
Name the 4 members of BLACKPINK.
Jisoo, Jennie, Rosé, Lisa
200
A battery charger is an example of ___ energy changing into ___ energy.
Electrical → Chemical
300
A 5 kg ball falls freely from a height of 20 m. What is its kinetic energy the moment it reaches the ground?
980 J
300
What was Michael Jordan’s jersey number?
23
300
A 2 W product uses 50 Wh of energy. How long was it used?
25 hours
300
Fill in the blanks in these song lyrics.
중려mg
일은 힘 X ___?_____
1J은 1N X 1m
위치 에너지 mgh
운동에너지 1/2mv²
____?____ 뜻 정의는
1초당 사용하는 전기에너지
중려mg
일은 힘 X 이동거리
1J은 1N X 1m
위치 에너지 mgh
운동에너지 1/2mv²
소비전력 뜻 정의는
1초당 사용하는 전기에너지
300
Name 2 units of electrical energy.
J, Wh
400
A ball with 100 J of mechanical energy is at rest 5 m high and then falls freely. What is its kinetic energy when it is 2 m high?
60 J
400
Name 5 sports in which Korea has won an Olympic gold medal.
archery, taekwondo, shooting, judo, short track
400
A 30 W product is used for 1 minute. How many joules (J) of energy does it use?
1,800 J
400
Name 5 BIGBANG songs
Lies, Haru Haru, Bang Bang Bang, Fantastic Baby
400
Explain the energy changes from shaking a simple generator to lighting up the LED.
Kinetic → Electrical → Light
500
A 4.9 kg object falls freely from a height of 4.9 m. What is its velocity (m/s) the moment it reaches the ground?
9.8 m/s
500
Which player had this career?
Man United → Aston Villa → Barcelona → Man United
Marcus Rashford 
500
1 Wh = ? J
3,600 J
500
Which Korean song is the most-viewed on YouTube? (Singer – Title)
PSY – Gangnam Style 
500
What condition is needed for a generator to change mechanical energy into electrical energy?
The magnet (or coil) must move near the coil