+1 vote
in Machine Kinematics by (38.0k points)
When a particle moves along a straight path, then the particle has

(a) tangential acceleration only

(b) centripetal acceleration only

(c) both tangential and centripetal acceleration

(d) none of the mentioned

I got this question by my college director while I was bunking the class.

My enquiry is from Linear Velocity in portion Kinematics & Kinetics of Motion of Machine Kinematics

1 Answer

0 votes
by (106k points)
Correct choice is (a) tangential acceleration only

Best explanation: When a particle moves along a straight path, then the radius of curvature is infinitely great. This means that v^2/r is zero. In other words, there will be no normal or radial or centripetal acceleration. Therefore, the particle has only tangential acceleration.

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