An object is moving east, and its velocity changes from 65 m/s to 25 m/s in 10 seconds. Which describes the
acceleration?
O negative acceleration of 4 m/s2
O positive acceleration of 4 m/s2
O positive acceleration of 9 m/s2
O negative acceleration of 9 m/s2

20) what is a magnetic field? 21) in which direction do magnetic field lines always point? 22) sketch a diagram showing how a plotting compass points around a 23) name two magnetic poles that will: a) attract each other b) repel each other. 24) explain why you can use a compass to navigate. 25) what's an electromagnet? 26) list two ways to increase the strength of an electromagnet. 27) the wire in a simple motor feels a force when a current flows through it. why is this? i need answers to check mine