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Hgjftjfykyk

 Hgjftjfykyk Composition

PROJECT IN PHYSICS

(Problems Compilation)

Submitted by:

KIMBERLY L. RECARE

IV- WISH

Submitted to:

CECIL SIERVO

PROBLEM SOLVING

1 . To look from your house to a the nearest shop, you must walk 4 meters east and after that 20 m 30° north of east. What is your displacement? Use polygon method and parallelogram technique. Check you result by simply sine regulation and cosine law.

COSINE LAW SINE LAW

R²= a² + b² -- 2 AB cos 150° = (4m) ² + (20m) ² - a couple of (4m)(20m) cos 150°

= 16m² + 400m² - a couple of (80m²)(-0. 87)

= 416m² - two (-69. 6m²)

sama dengan 416m² -- (-1392m²)

R²= 555m²

R= 23. 56m or

R=24m

2 . You found a treasure map and it said: Start at the well, go 100m straight south, then 30m 40° In of Watts, then twenty-five m straight east, and ultimately 45m 75° S of E. How far from the well and in what direction may be the hidden treasure? Use component method. VECTOR| X-com (cos)| Y- com (sin)| 75 m S| 0| -100m

30M 40° NW| -30m cos 40°= -22. 98| 30m bad thing 40°=19. 28

25m E| 25m| zero

45m 75°SE| 45m cos 75°= 11. 65| -45m sin 75°= -43. 47

∑= by & y| 13. 67| -124. 19

Dr = x² & y²

sama dengan (13. 67) ² & (-124. 19) ²

= 186. 87 + 12-15, 423. sixteen

= 12-15, 610. 03

Dr = 124. 94 or

Doctor = 125m

Tan Ɵ =

=

sama dengan tan ¹ (9. 09)

Ɵ = 83. 72 or

Ɵ = 84°

3. A vehicle starting from rest, accelerates for 15. zero min right up until it's speed is twenty m/s. After that it moves by constant speed for another twenty. 0 min before some time down and lastly stopped in another 10. 0 min. Discover (a) speed during the 1st 15 min, (b) the deceleration over the last 10 min of their motion, (c) the distance moved during the last small, and the (d) total shift. (e) Bring the displacement versus time graph and velocity compared to time graph for the motion of the car. Presented:...

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