A 1.49-kg particle initially at rest and at the origin of an x-y coordinate system is subjected to a time-dependent force of
F(t) = (4.00ti − 8.00j) N
with t in seconds.
(a) At what time t will the particle's speed be 14.0 m/s?
s
(b) How far from the origin will the particle be when its velocity is 14.0 m/s?
m
(c) What is the particle's total displacement at this time? (Express your answer in vector form. Do not include units in your answer.)
r =
m
3 answers