Show all work using LESSS to answer questions 1 - 3. 1. A car starts from rest and proceeds west, accelerating to a velocity of 100 km/h in exactly one minute. What was the acceleration in m/s2? a=ΔvΔt This is what I got for #1 L Delta A = ? E Delta A = Ai= 27.8m/s Af= 60 seconds S Delta A = Ai/Af = 27.8 / 60 = S Delta A = 0.463 S Delta A = 0.5m/s2 2. A car traveling north at 50 m/s speeds up to 80 m/s by accelerating at a rate of 4.0 m/s2. What was the time required? T= Iv/fv*a? 3. A plane traveling at 200 km/h north accelerates at 5.00 m/s2 for two minutes. What is the planes final velocity in m/s? Final velocity = iv+ t * a 3. A plane traveling at 200 km/h north accelerates at 5.00 m/s2 for two minutes. What is the planes final velocity in m/s? Final velocity = (Initial velocity) + (time)(acceleration) Show your work including equation, substitution and final answer, for questions 4 – 7. 4. A boy on a bicycle travels in a straight line east and slows down from 30 m/s to 10 m/s in 5.0 s. What is his acceleration? a=ΔivΔfv 5. A car travelling south slows down from 80 m/s to 40 m/s by accelerating at -4.0 m/s2. What time interval was required? Time = Initial Speed/Final Speed*Acceleration? 6. A car travelling south accelerates at 3.0 m/s2 for 9.0 s and reaches a speed of 90 m/s. What was the car’s original speed? Not sure 7. A car traveling east at an unknown speed applies the brakes and slows down at a rate of 5.0 m/s2 for 5.0 s. If the final velocity of the car is 95 m/s east, what was the original velocity of the car? Not sure I'm aware I need to at least try, Which i'm doing now. Thanks in advance.