A body moves along the -axis such that (in metres)
PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
A body moves along the x-axis such that x(t)=5−2t (in metres). Which statement about its instantaneous speed s and instantaneous velocity v is correct?
(a) s=2m/s and v=2m/s
(b) s=−2m/s and v=2m/s
(c) s=2m/s and v=−2m/s
(d) s=v=−2m/s