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- 1. The diagram below gives the velocity-time graph for a particle travelling along the х-ахis. 60 V(m/s) 40 20 10 20 30 40 50 t (s) Calculate: (i ) the acceler ati on during the first 10s. (ii ) the total di stance travelled. (iii) the deceleration during the last 10s.The rocket sled starts from rest and accelerates at a = 30 + 2t m/s? until its velocity is 400 m/s. It then hits a water brake and is acceleration is a = -0.003V2 until its velocity decreases to 100 m/s. (a) Determine the time the rocket sled reaches a velocity of 400 m/s in sec. (b) What total distance does the sled travel in meters? (c) What is the sled's total time of travel in sec.?16 A Ya and ari fighter-craft accelerates Qt a constat rate ) Starting out at rest relative e to ocr frame Of reference ,It reahes a 2. Speed of 25oo m/s in a time of 120-0min a Find The acceleration magnitude of the fighter-c raft, in )Express The accelera tion 19=9.8 g nagnitude above in terms of g's, where
- 1. A bowligg ball is thrown down from a zoth After. 3 sE6onds, the bowling ball is 26 feet from the gCound and a Cdownwards). use the Known physical cLonstant that Gcceleration due to seaond. Stay window. Cate of -1l06 feet per second falling at aramity is -32°teet per per second a. If the s() being 3+)= ať+ bt+E, usE s(3); g'C3), 's") to find an of the bowling ball t seconds after a quadratic polynomial function thrown is given by a equation for s6), b. How high is the 20th story window from which the bowling c. How fast was the boeling ball originally ball was Hhrown? throun?Michael, the regional manager of a mid-sized paper company innortheastern Pennsylvania, must drive to The Office every day for work.During his morning commute, he drives an average of 25 mph due East for15 minutes to exit his neighborhood, then turns 45o N of E onto I-81, wherehe drives at 70 mph for 5 more minutes. Finally, he exits I-81 and drives at30 mph at 45oS of E for 5 minutes before pulling into Scranton BusinessPark at 1725 Slough Avenue.a. What is his total distance traveled?b. What is his average speed?c. What is his displacement from home when he arrives at work?d. What is his average velocity?Stopping Distance When the driver of a vehicle observesan impediment, the total stopping distance involves boththe reaction distance (the distance the vehicle travels whilethe driver moves his or her foot to the brake pedal) and thebraking distance (the distance the vehicle travels once thebrakes are applied). For a car traveling at a speed of v milesper hour, the reaction distance R, in feet, can be estimatedby R1v2 = 2.2v. Suppose that the braking distance B, infeet, for a car is given by B1v2 = 0.05v2 + 0.4v - 15.(a) Find the stopping distance functionD1v2 = R1v2 + B1v2. (b) Find the stopping distance if the car is traveling at aspeed of 60 mph.(c) Interpret D1602.
- Consider a dragster that, when the light turns green, accelerates uniformly from rest and completes a 372 meter race in a time of 6.61 seconds. a) During this period, what is the dragster's acceleration expressed as a multiple of the acceleration due to gravity, g? b) If the dragster could continue with this average acceleration, what would its speed be, in miles per hour, after it has traveled a total distance of 1.6km1.6km, which is approximately one mile?12. You are driving home from at 85.0 km/h for 130. km, then you slowed down to 70.0 km/h. You arrived home after driving 3.00 hours and 10.0 minutes. What was your average speed in mete/h * O a) 73000 O b) 75 152 O c) 77 200 O d) 77500 notaSclence 24: Module 4 Assignment Booldet 4A 4. Michael used a stopwatch to time his remote-controlled car over a 6-m distance. The car took 1.5 s. What was the car's average speed? A. 2 m/s B. 3 m/s C. 4 m/s D. 5 m/s Tot boloved f (1) 5. The velocity is time is halved. when the distance is kept the same and the althe Return to page 35 of the Student Module Booklet and begin Lesson 2. Tete ah bellevant for For questions 6 to 15, read each question carefully. Decide which of the choices BEST completes the statement or answers the question. Place your answer in the blank space given. the tapo todo Use the following graph to answer questions 6 to 9. Distance/Time Graph for Four Objects Object B Object A Object C Object D oo oot oriol tasa ow den onteo er bro opv rlol a wose a bne 6. Ouor 1n 2 3 4 Time (s) 5 6. Which object travelled for the longest time? A. Object A B. Object B C. Object C D. Object D
- . Distance and Time Anthony leaves Kingstown at 2:00 p.m.and drives to Queensville, 160 mi distant, at 45 mi/h. At2:15 p.m. Helen leaves Queensville and drives to Kingstownat 40 mi/h. At what time do they pass each other on theroad?!A BYCCLE と rPEEP 0F @ TY SPEEO IN AAS km/h? WHAT=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?