A particle moving at a velocity of 2.3 m in the positive x direction is given an acceleration of 4.9 m/s^2 in the positive y direction for 4.3s. What is the speed of the particle? Answer in units of m/s.

Thank you for the opportunity to help you with your question!

If force (mass x acceleration) is acting perpendicular to the motion of direction of an object, then the work done on the system is constant, which implies that the kinetic energy and hence speed is constant. A common case when acceleration is perpendicular to velocity is during circular motion, which is associated with constant speed. Hence the speed of the particle will be 2.3m/s only.

Please let me know if you need any clarification. I'm always happy to answer your questions.

Sep 27th, 2015

Are you studying on the go? Check out our FREE app and post questions on the fly!