Question

Free Fall

An object is dropped and marks are made on a strip of paper as it falls every 1/30 seconds.1) You have the following marks on a piece of tape: 0 cm, 3.5 cm, 7.8 cm, 13.3 cm, and 19.8 cm. What is the average of these average accelerations? 2) You have the following marks on a piece of tape: 2.4 cm, 5.8 cm, 9.95 cm, and 15.55 cm.What is the average of these average accelerations? 3) How do these values compare with the accepted value of 980 cm/s2 (9.8 m/s2)? Compute the % error for each.

Side Note: Need to take the difference in positions and divide by the elapsed time to get your average velocities. Then you need to take the difference between the average velocities and divide by the elapsed time to get your average accelerations. Also, every number needs a unit. For example, v_10 = (x_1-x_0)/delta(t) = (3.5 cm-0 cm)/(1/30 sec). The % error needs an absolute value in the expression.

Answer 1