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- =2.Aparticle, atrest, was initially moving at a constant acceleration of 10 m/s. Howfarwillyou travel in (a) 20 secomds and (b) 4.0 seconds? If the initial velocity of this objectwas 4 m/s, then howfarwould it travelin (c) 2.Os and (d) 4.0s?2. We are given the velocity funtion of mouing car Along an east-wed4 highung is V(4) = 3€²-24 where t- hours afterho and distance is measured east is the positive direction, in miles, Note that going A If st) is the position in miles from Norton Tewn Mall and at 1 pm the car was at Norton Town Hall, find S(4) B) What was the average velocity of the car from Zpm to 5 pm! Include units of measurementi ) Set up o formula involving either s(E) or the total distance trave lled by the objét from Ipm to tpm? Answer simpligye v(t) that gves must have s" er v's in it. Do not1. A cyclist travels 6km due east and then makes a turn to travel a further distance of 8km due north. The whole journey takes 2 hours. Calculate - the distance travelled by the cysclist - the averafe speed of the cyclist - the displacement of the cyclist - the average velocity of the cyclist Given: Find: Formula: Solution:
- 1) Billy Bob drives 35.6km to work each day (down at the call center where he makes up random answers to people's internet problems), at 25.0m/s (ignore speeding up and slowing down; BillyBob belives in "pedal to the metal" and he doesn't believe in stop signs.) As the crow flies, he lives 17.66km due North from where he works. What is his average velocity on his drive to work?A motorcycle speed increases from 15 kilometres per hour to 60 kilometres per hour in 20 seconds. Solve average speed, distance travelled and acceleration. Answer in mks.7. A person takes a trip, driving with a-constant speed of s T km/h, except for a 22.0-min rest stop. If the person's age speed is 77.8 km/h, (a) how much time trip and (b) how far does the person travel? aver- spent on the
- A cheetah can accelerate from rest to a speed of 30.0 m/s in 7.00 s. What is its average acceleration i meters per second squared?5. Derive a formula that relates the displacement, final velocity, time and constant acceleration of an object in UARM (Uniformly Accelerated Rectilinear Motion). Use that formula to find the time it takes for a particle to attain a velocity of 30" given that the constant acceleration is 6 and the particle's displacement is 25m to the left of the origin. Supnoce on olectron hee an ngoolorotion dofinad by a (t) 20to-t where t ieA minivan is tested for acceleration and braking. In the street-start acceleration test. the elapsed time is 8.2s for a velocity increase trom 10 kav/h to 100 km/h. In the braking test, the distance traveled is 44 mi during braking to a stop from 100 knvh. Assuming constant values of acceleration and deceleration, determine to the acceleration during the street-start test, ib) the deceleration during the braking test. Fig. P11.34
- A rock is released from rest from the top of a very high cliff, and accelerates dovnward at acceleration due to gravity, g. How far does the rock travel (in m) in the first seconds of its ree-fall?asa Ys beogl take this car to reach a velocity of 30 m/s east? How far will the car travel during this time? 3m152 4大号 At=? 7. An object's velocity curing a 10 second time interval is shown by the graph below: Velocity (m's) ou ml gnin AS Teboo Sni lovu 3- MYE 1+ Time (seconds) 10 s lieiio abrgAE w.un 0.0 i abn od to boor lacil 1 3 5 -1+ fooitelae ab -2+ Determine the object's total distance traveled and displacement. Show all work. 大-10sec AK-Xott'sat? よニ105cc Ax-o(0)t5 d=17.sm Ax-? bs 1291 mo do AA noitenfooon or onims Vo =omIs BJAt1= 0, the object's position is x = 2 m. Find the object's position at t= 2, t = 4, t = 7, andt = 10. Show all work. Saboo 01 o iloe l wol d 8. Is it possible to move with constant speed but not constant velocity? Explain your answer. 1es because velocity isaspecel of me obiect with Specifi cation of it's direct ion, boog ad A -to noilol hy the College Board11) An aiplane traveling north at 400 m/s is accelerated due east at a rate of 50 m/s for 6 s If the effects of air resistance and gravity are gnored, what is the final speed of the planc? A. 300 m/s ctivat B. 400 m/s 500 my s D. 700 m/s