Answer to Question #52857 in Atomic and Nuclear Physics for basil

Question

{
{"An object of mass, m=5, at the origin has a velocity of (12 i - 18 \
j)m/s at t = 0. It is accelerated at a constant rate for 5 seconds \
after which it has a velocity of (5 i - 7 j)m/s."},
{"1. What is the magnitude of the resultant force acting on the \
object during this time interval?
TraditionalForm]\)= .....................N"},
{"2. How far is it from the origin after 3 seconds?
{"3. What is the speed after 3 seconds? Sp = \
.......................m/s"}
}