Determine an approximate value for the acceleration of free fall using a tennis ball, metre ruler and a stopwatch.

Drop the ball from a given height that is measured with the ruler and measure the time it takes for it to reach the ground using the stopwatch. Use the appropriate SUVAT equation of motion: we have a height (vertical displacement, acceleration only acts downwards due to gravity) and a time, and would like to calculate acceleration. Hence we need s = ut + 1/2 at2, where "s" is the height from which the ball was dropped, "u" is initial velocity which is 0, "t" is the time of dropping and "a" is the acceleration which we would like to find out. Reorder the equation for "a": a=2*s/t2 and substitute in the known values. Repeat this a few times and take an average due to measurement errors and for better reliability of the experiment.

Answered by Viktoria N. Physics tutor

8871 Views

See similar Physics A Level tutors

Related Physics A Level answers

All answers ▸

A gun of mass 10kg fires a bullet of mass 240g at a speed of 300ms-1. What is the speed of the gun's recoil?


What is simple harmonic motion?


Draw the I-V curves of both an ideal resistor and a filament bulb. Explain the key features of both.


Two immobile point charges Q1 and Q2 of values +q and +3q respectively are some distance apart. Q3, with value +2q is placed between them and does not move. What is the ratio of the distance between Q3 and Q2 to the distance between Q1 and Q3?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences