Q12 · 2022 · Paper 1Simple familiar1 mark
QUESTION 12
An object experiencing uniform circular motion in a horizontal plane travels at an average speed of 8.0 m s−1. Calculate the radius of the object’s path if it takes 0.3 s to complete a full rotation.
(A)
3.8 × 10−1 m
(B)
2.6 × 100 m
(C)
1.5 × 101 m
(D)
1.7 × 102 m
WORKED SOLUTION
1 markAnswer A
ANSWER
A
Worked solution
The distance travelled in one revolution is m, so m. Option A.
Selects option A.
Worked explanation by QCE Vault; correct option verified against the QCAA answer key.