Which statement accurately describes the relationship between force and momentum?
A. As the density of an object decreases, its momentum decreases,
and it takes less force to change its motion,
B. As the mass of an object decreases, its momentum increases, and
it takes more force to change its motion,
C. As the mass of an object decreases, its momentum decreases,
and it takes less force to change its motion,
D. As the density of an object decreases, its momentum increases,
and it takes more force to change its motion,

The eel has a certain amount of rotational kinetic energy when spinning at 14 spins per second. if it swam in a straight line instead, about how fast would the eel have to swim to have the same amount of kinetic energy as when it is spinning?

An input force of 7 n is applied to a machine with a mechanical advantage of 1.75. what is the maximum the machine could lift? 12.25 n7n7.25 n26.2 n

Very large accelerations can injure the body, especially if they last for a considerable length of time. one model used to gauge the likelihood of injury is the severity index ( ), defined as =/ . in the expression, is the duration of the accleration, but is not equal to the acceleration. rather, is a dimensionless constant that = the number of multiples of that the acceleration is equal to. in one set of studies of rear-end collisions, a person's velocity increases by 13.7 km/h with an acceleration of 36.0 m/s2 . let the + direction point in the direction the car is traveling. what is the severity index for the collision?