Q. If a 120 g mass is placed at the 28 cm mark (22 cm from the fulcrum), at what mark should a 500 g mass be placed so that the system balances?
Q. During 5 successive 0.97 min intervals, a runner moves at the following constant speeds: 0.436 km/min, 0.250 km/min, 0.160 km/min, 0.160 km/min, and 0.320 km/min. Compute the total distance traveled and the average speed.