Two students are observing a 10 gram object moving around a circle with a radius of 5 centimeters. The constant velocity of the object is measured as 0.75 m/s with a motion detector. Which is the approximate centripetal acceleration of the object? A. 5 m/s2
B. 11 m/s2
C. 20 m/s2
D. 98 m/s2

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?

Asap and show ! a 14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?