(a) A particle has an initial velocity of u ms. It moves in a straight line with...
Question:
(a) A particle has an initial velocity of u ms⁻¹. It moves in a straight line with constant acceleration f for 4 seconds. It travels 52 m while accelerating. The particle then moves with uniform velocity and travels 48 m in 3 seconds. It is then brought to rest by a constant deceleration of 2f.
Find
(i) the value of u
(ii) the deceleration of the particle
(iii) the total distance travelled by the particle.
(b) Car A and car B travel in the same direction along a straight horizontal road. Car A starts from rest at a point P and moves with constant acceleration a ms⁻². Five seconds later, car B passes point P with constant speed u ms⁻¹.
(i) Find the value of u, in terms of a, if car B just catches up with car A.
(ii) Find, in terms of u and a, the greatest distance that car B is ahead of car A when u > 10a.
Vector Mechanics for Engineers Statics and Dynamics
ISBN: 978-0073212227
8th Edition
Authors: Ferdinand Beer, E. Russell Johnston, Jr., Elliot Eisenberg, William Clausen, David Mazurek, Phillip Cornwell