Question

ALWAYS use significant figure rules. Remember that these rules apply to all numbers that are

measurements.
An object moves in uniform circular motion at 50 m/s and takes 1.0 second to go a quarter circle. Calculate the
centripetal acceleration.
m/s2
160
78

Answer 1

as v=rw

50=r π/2

r =100/π=31.8 m

Cp acc. = v^2/r

= 50×50/31.8

= nearly78m/s^2