Need Help Solving Grade 10 Final Exam Questions!

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The discussion focuses on a student preparing for their grade 10 final exam who has lost their basic formulas for physics. They request help with formulas for speed, time, displacement, acceleration, and distance. Additionally, they present a problem involving a boulder falling under gravity with an acceleration of 9.81 m/s² and ask which formula to use to determine the height of the ledge. Participants in the thread provide the necessary formulas and guidance for solving the problem. This exchange highlights the importance of foundational physics concepts for exam preparation.
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im studying for my grade 10 final exam and I've lost my basic formulas note. could someone please post the formulas to find
speed
time
displacement
acceleration
distance ( maybe)
( i think its in relation to distance and time and speed)
also in my review sheet there is this question
a ;arge boulder is positioned precariously on a ledge. The boulder is disturbed and falls into the river below under the force of gravity with an acceleration of 9.81 m/s (squared)
a) how high up was the ledge?
which formula would i use to solve that? thanks in advance.
 
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