Why is Ke lost in inelastic collision?
An inelastic collision is a collision in which there is a loss of kinetic energy. While momentum of the system is conserved in an inelastic collision, kinetic energy is not. This is because some kinetic energy had been transferred to something else. Such collisions are simply called inelastic collisions.
Which skateboard has the greatest impulse?
The impulse is given by the magnitude of the force times the time interval: We can see that the force F of the 4 skateboard is always the same (33 N), this means that the skateboard with greatest impulse is the one with the largest time interval, so skateboard C).
Which case requires greatest impulse?
The impulse required is greatest when the ball is caught and then thrown back because the impulse required equals the change in momentum.
When two vehicles collide momentum is conserved?
An inelastic collisions occurs when two objects collide and do not bounce away from each other. Momentum is conserved, because the total momentum of both objects before and after the collision is the same. However, kinetic energy is not conserved.
Can you produce a net impulse on an automobile by sitting?
Can you produce a net impulse on an automobile if you sit inside and push on the dashboard? Only external forces produce changes in momentum, so no you cannot as it is an internal force. After the collision, car A is observed to be at rest.
Why is it advantageous to roll with the punch in boxing?
Why is it advantageous to roll with the punch in boxing? Rolling with the punch increases contact time, which decreases the force. Which undergoes the greatest change in momentum (if all of the baseballs have the same speed just before being caught and just after being thrown)?
What happens the first time Dr Hewitt lifts the bowling ball near his teeth and lets go?
Why does the bowling ball behave the way it does the first time Dr. Hewitt lifts the bowling ball near his teeth and lets go? All of the initial energy of the ball was converted completely back to potential energy when the ball returned.
Why is it easier to stop a lightly loaded truck than a heavier one that has equal speed?
Why is it easier to stop a lightly loaded truck than a heavier one that has equal speed? It is easier to stop a lightly loaded truck than a heavier one moving at the same speed because it has less KE and will therefore require less work to stop. (An answer in terms of impulse and momentum is also acceptable.)
Is it easier to balance a long rod with a mass?
Is it easier to balance a long rod with a mass attached to it when the mass is closer to your hand or when the mass is farther away? It is easier when the mass is closer to your hand. It is equally easy in both cases. It is easier when the mass is farther from your hand.