A curling rock of mass 42kg is sliding along a frictionless ice surface when it strikes a rock a third of its its mass, giving the rock an instantaneous acceleration of 8.0ms² [W]. According to Newton's Third Law, the 42kg rock will experience an acceleration of:
- 2.7ms² [E]
- 8ms² [W]
- 2.7ms² [E]
- 8ms² [E]