Sections
Key Equations

Key Equations

 Newton's first law of motion or$ΣF=0 ΣF=0$
 Newton’s second law of motion $Fnet=ma Fnet=ma$or$ΣF=ma ΣF=ma$ Newton’s second law of motion to solve acceleration Newton’s second law of motion to solve weight $W=mg W=mg$
 normal force for a nonaccelerating horizontal surface $N=mg N=mg$ tension for an object at rest $T=mg T=mg$