pa help with solution po sana ty
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pa help with solution po sana ty
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1.) You serve a volleyball with a mass of .05 kg. The ball leaves your hand with a speed of 30 m/s.
Given: m = 0.5 kg
v = 30 m/s
Equation: Ke = ½ mv²
Solution: KE ½ mv²
KE ½ (0.5 kg) (30 m/s)²
KE ½ (0.5 kg) (900 m/s)
KE ½ (450 kg m/s)
KE = (225 J)
2.) A baby carriage is sitting at the top of a hill that is 21 m high. The carriage with the baby weighs 12 N. The carriage has Potential energy. Calculate it.
Given: h = 21 m
w = 12 kg
Equation: PE = hw
Solution: PE = hw
PE = (21 m) (12 kg)
PE = 252 J
3.) A car is traveling with a velocity of 40 m/s and has a mass of 1120 kg. The car has Kinetic energy.
Given: m = 1120 kg
v = 40 m/s
Equation: KE = ½ mv²
Solution: KE ½ mv²
KE ½ (1120 kg) (40 m/s)²
KE ½ (1120 kg) (1600 m/s)
KE ½ (1 792 000 kg m/s)
KE ½ 896 000 J
(Ang potential energy ay isang nakahinto o hindi gumagalaw na bagay samantalang ang kinetic energy Naman ay ang gumagalaw na bagay)
Sana po makatulong
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