Q1: Assuming friction force to be negligibly small, what will be the acceleration in m/s^2 of a 45kg skater when propelled by a force of 250N? My attempt Data: F-250N m-45kg a-m/s^2 Formula: F=ma a=F/m a=250N/45kg a=5.555 a=5.6m/s^2 Q2: a 0.5kg mass on a horizontal frictional free table is accelerated by a force from a string passing over a pulley and attached to a mass of 1.5kg hanging vertically. My attempt Data: m-0.5kg hanging m-1.5kg formula: F=F1+F2 F=0.5kg+1.5kg=2.0kg F=ma F=2.0kg(9.80m/s^2) F=19.6 rounded to 20N My attempt at B) Data: F=19.6N m=2kg a=?m/s^2? Formula: F=ma a=F/m a=19.6N/2kg a=9.8 rounded to 10m/s^2 Q3: A 1200kg truck is moving at 108km/h and stops within a distance of 91m a)What is the acceleration? My attempt Data: m-1200kg Vi-108km/h--->converted to 30m/s Vf-0 s-91m Formula: 2as=Vf^2+Vi^2 a=Vi^2/2s a=(30m/s)^2/2(91m) a=900m^2/s^2/182m a=-4.9m/s^2(negative because it decelerated) My attempt at part B)What is the coefficient of friction? Formula: Ff=uFn u=Ff/Fn u=4.9m/s^2/1200kg u=0.00408 Q4: you are pulling a 3.0slug crate and a sliding friction is known to be 55lb. what is the acceleration o the crate when the pulling force is? a)55lb, b)75lb and c)105lb My attempt at a) Date: m: 3.0Slug F:55lb a:?m/s^2? Formula: F=ma a=F/m a=55lb/3.0slug a=18ft/s^2 My attempt at part b) Data: m: 3.0slug F: 75lb a: ?? formula: F=ma a=F/m a=75lb/3.0slug a=25ft/s^2 My attempt at part c) Data: m: 3.0slug F:105lb a-?? Formula: F=ma a=F/m a=105lb/3.0slug a=35ft/s^2 Q5: During a training exercise, Brian who weighs 75kg skydives and parachutes from a stationary helicopter. What is the acceleration when the air drag is a)500N, b)1500N, and c)Equal to his weight My attempt at a) Data: Fw:75kg g:-9.80m/s^2 m: 500N a=? Formula: F=ma a=F/m a=500N/75kg a=6.66m/s^2 My attempt at b) Formula: a=F/m a=1500N/75kg a=20m/s^2 My attempt at c) Formula a=f/m a=75N/75kg a=1 m/s^2 first of all I want to thank anyone that gives their time and effort to help me do this homework that is due very soon. I don’t think I understand it very well and I am start to get really worried. Secondly, if you notice any problems, can you please show me how to do it? Id appreciate any help I can get. Thanks a ton people.