Physics · Grades 9–12
Motion & graphs · Formula reference 3
Formula reference
Rule and assumptions
Free fall from rest
Treat g as constant, ignore air resistance, and start from rest.
d = ½gt²
Horizontal projectile range
Initial vertical velocity is zero; ignore air resistance and use level ground below.
t = √(2h/g); x = vₓt
Further reading and review references
These are reference links, not copied exercises, institutional endorsement or proof of independent review.
Learning preview · independent educational and translation review required. Suggested grades are not official curriculum alignment.