Impulse often demonstrates the impact of a force on an object during a certain period of time based on the product of the object's mass and velocity, which is the definition of momentum. The average force on the object changes due to contact time. When an object falls straight to the ground, the contact time between them is small so the object feels a large amount of impact by the force. In order to reduce the amount of impact between the objects, the contact time between them must increase. In these two photographs, a bear falls on the floor and then on a pillow. Due to the pillow, the average force of the ground has less of an impact on the bear because the force distributes itself over a longer period of time.
No comments:
Post a Comment