MCQ on kinematics of motion

1. The unit of linear acceleration is
(a) kg-m (b) m/s (c) m/s
(d) rad/s2

2. The angular velocity (in rad/s) of a body rotating at N r.p.m. is
(a) π N/60 (b) 2 π N/60 (c) π N/120 (d) π N/180

3. The linear velocity of a body rotating at ω rad/s along a circular path of radius r is given by
(a) ω.r (b) ω/r (c) ω2.r (d) ω2/r

4. 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

5. When a particle moves with a uniform velocity along a circular path, then the particle has
(a) tangential acceleration only (b) centripetal acceleration only
(c) both tangential and centripetal acceleration

ANSWERS
1. (c) 2. (b) 3. (a) 4. (a) 5. (b)