Fig. 1.1 shows a distance-time graph for a moving object. 50+
C
1
1
-
1
1
1
distancelm
W
11
times
(a) Describe the speed of the object between points
A and B

Write the equation for momentum, first using symbols for the variables, then using words for the variables.

What is the momentum of a 2 kg object moving at 15 meters per second

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?