Physics
Grade-7
Easy
Question
Direction : Calculate the missing term
m = 12 kg
v = ?
K.E. = 240 J
- 2
m/s - 20 m/s
- 40 m/s
m/s
Hint:
2√10 m/s
The correct answer is: 2
m/s
KE =
mv2
240 =
× 12 × v2

= 40
v = 2
m/s
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