- #1
Stephanus
- 1,316
- 104
Dear PF Forum,
I have a problem with calculating energy which I should have learned long ago in my high school time.
If I push (accelerate) a 1 kg object 1 meter/sec2 for 10 seconds, I spend energy like this.
Distance = 1/2 at2. So I would have pushed this object for 50 metres. So I'm using energy 50 metres * 1 kg * 1 m/sec2 = 50 joules.
Am I right?
Now for the second question. Supposed I push a wall with the same force as above for 10 seconds, how can I calculate the energy consumption? Considering the wall doesn't move.
Thank you very much.
I have a problem with calculating energy which I should have learned long ago in my high school time.
If I push (accelerate) a 1 kg object 1 meter/sec2 for 10 seconds, I spend energy like this.
Distance = 1/2 at2. So I would have pushed this object for 50 metres. So I'm using energy 50 metres * 1 kg * 1 m/sec2 = 50 joules.
Am I right?
Now for the second question. Supposed I push a wall with the same force as above for 10 seconds, how can I calculate the energy consumption? Considering the wall doesn't move.
Thank you very much.