PHYS 111 Laboratory - Pre-lab #9 (IMPULSE AND MOMENTUM) Student Name: be Cotte Lab Day and Time: } Friday 10:30 Due at the beginning of lab. All answers must be legibly handwritten for credit. Show all work. References: lab manual, textbook Ch. 9.1 - 9.3. 1) (lab manual, Ch. 9.1 and 9.2) You have two identical objects (same mass) traveling at different speeds. Which one has a higher momentum? Would it take a larger or smaller impulse to stop the higher momentum object from moving? How can you reduce the average force needed to stop the object? Fluid evers upward force in on an OneLT emmessed 2) (lab manual, Eq. 9.1) Write a formula for the impulse in terms of time interval and average force. Identify all variables and SI units. 8.37x 10 8 . 3) (lab manual, Eq. 9.10) Write a formula for the impulse in the x-direction for one dimensional motion in terms of change in momentum. Define each momentum term explicitly. Identify all variables and SI units. 4) (lab manual, Ch. 9.1 -9.3) What is the impulse for an average force of 5.2 N and a time duration of 0.50 s? What is the average force if the same impulse is produced in 0.25 s? 5) (lab manual, Ch. 9.1 - 9.3) What is the change in momentum for an impulse of 7.2 N.s? If an object is 3.6 kg, what is the change in velocity after the impulse? PHYS 111 Laboratory - Fall 2020