Answer:
It has been converted into thermal energy due to friction
Explanation:
According to the law of conservation of energy, energy cannot be created nor destroyed, but only transformed from one form into another.
Applied to this problem, it means that the total initial energy of the spring-toy system must be conserved.
Therefore:
- At the beginning, the total energy stored in the spring is 10 J
- After the toy is released, the total energy must still be 10 J.
In reality, we are told that the kinetic energy of the car is only 8 J. The other 2 J have not been destroyed, but they have been converted into thermal energy, due to the presence of frictional forces that act against the motion of the toy car.
Answer: the 30gram will hit the ground first
Explanation:the 30gram bullet will hit the ground first because it is fired
20m away
the dog was 60m away from. you subtract 40m since it is 10m/s x 4 seconds
Most objects move at a constant speed because of friction and acceleration. The constant speed keeps them in place, and keeps a balance.
The mitochondria is the powerhouse of the cell because it takes nutrients and breaks it down to provide energy for the cell.
