1. (4 points) A rocket ship accelerates in outer space. It runs out of fuel (no 4 points more thrust is applied) and then its motion: *
a) accelerates for a short time, then slows down to a constant velocity
b) accelerates for a short time, slows down, and eventually stops.
c) no longer accelerates, and continues to move with constant velocity
d) stops immediately
D

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 i'm in class rn a 1,000-kg car is traveling 20 m/s on a flat stretch of road. it gets to a hill and coasts uphill until it stops. how high up the hill does the car travel? givens: equation: 1/2mv2initial=mghfinal solve for h. plug & chug, label.

Acar is traveling 35 mph on a smooth surface . if a balanced force is applied to the car what happens?