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PHYSICS 1L03 (115)
Reza Nejat (43)
Lecture

Set3-Key.pdf

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School
Department
Physics
Course
PHYSICS 1L03
Professor
Reza Nejat
Semester
Fall

Description
Phys 1L03 Tutorial – Problems sets Set 3, Key Locomotion 1. a. 10.0 m/s b. 25 m 2. 2 a. a gazelle4.3 m/2 b. a lion 9.5 m/s c. a trout 23 m/s 2 2 3. -3.2 m/s 4. d 5. yes 2 6. – 7.0 m/s 7. – 857 m/s 2 8. a. 13 m b. 3.26 s =3.3 s c. – 185.6 m (185.6 below the ground) d. 10.17 m = 10. m 9. a. 1357.7 m b. 76.9 s 10. a. 16.5 s b. 299.2 m 11. a = g = gsinθ v − v 2 = 2ax x b t vb2 − vt = 2 ginθ x (15) − (3) 2 = 2(9.8)(sin10 ) x x = 126.93m = 127 m ⎪ vi,x= 500.0 m / 12. vi = ⎨ yi = 20.0 m yf= 0 ⎩ vi,y= 0 ⎪x=v t, x ⎨y = y + v t − gt ⎩ i i,y 2 y = 0 = 20.0 + 0 − 1(9.8)t2 ⇒t = 2x20.0 = 2.02 s f 2 9.8 3 x = 500.0 × 2.02 = 1.01×10 m = 1.01 km ⎪x=v ti,x 13. ⎨ 1 ⎩y = yi + vi, y
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