A 0.15kg hockey puck is being pushed along frictionless ice by a stick. Its speed changes from 0.2 m/s to 2.54 m/s in 2.1 seconds. What is the acceleration of the puck in this time? What force does the stick exert on the puck?

The answer will be d. reflects light because it cant be all the others because light cant be other things other than light

It is either a  proton or a neutron im almost positive. hope this .

Answersystem;

The boat's velocity relative to the riverbank can be resolved into two components. the component going north is 2.7 m/s and the component going west is 1.2 m/s.we add these two vectors and then find the magnitude of the resultant to get the speed.the magnitude of the resultant vector from adding can be obtained by the pythagorean theorem.    to two significant figures, the boat's speed relative to the riverbank is 3.0 m/s.