At , particles and occupy the same point on a straight track. Their velocities at…
MATHEMATICS · Single correct · A Level · Mathematics · Kinematics · Kinematics
Problem
At t=2 s, particles P and Q occupy the same point on a straight track. Their velocities at that instant are vP(2)=−3 m/s and vQ(2)=5 m/s. Which of the following statements best describes their positions for times immediately after t=2 s?
(a) Particle Q will be to the right of particle P because it has the greater speed.
(b) Particle P will be to the left of particle Q because it is moving in the negative direction.
(c) Both particles will remain at the same position because they start together and no information about their accelerations is provided.
(d) Particle Q will be to the left of particle P because a positive velocity indicates motion toward decreasing position values.