Physics (AS & A Level) · Oct / Nov 2018 · Paper 13 · Question 11

A rigid, hollow sphere is immersed deep in water and released from rest. It experiences an upthrust which propels it towards the surface of the water. Which graph best shows the variation with time t of its upward velocity v?

1. AGraph A: v increases from 0 and asymptotically approaches a constant value.
2. BGraph B: v increases linearly from 0.
3. CGraph C: v is constant from t = 0.
4. DGraph D: v decreases from a maximum and asymptotically approaches a constant value.

As printed in the paper