FISIKA DASAR By: Mohammad Faizun, S.T., M.Eng.

Presentasi berjudul: "FISIKA DASAR By: Mohammad Faizun, S.T., M.Eng."— Transcript presentasi:

1 FISIKA DASAR By: Mohammad Faizun, S.T., M.Eng.
Head of Manufacture System Laboratory Mechanical Engineering Department Universitas Islam Indonesia

2 MOTION (Gerak)? Gerak adalah proses berpindahnya suatu objek. Berpindah berarti posisi relatifnya berubah. Dari gambar di atas, sebutkan benda-benda mana saja yang bergerak! Jelaskan!

3 Kinds of motion: according to the path of objects linear motion (translational motion) circular motion elliptic motion projectile motion 2. according to the speed of objects uniform motion the object moves in constant speed non uniform motion: speeding up and slowing down.

4 Straight motion Straight motion Projectile motion Circular motion elliptical motion

5 LINEAR UNIFORM MOTION DIMENSION 1 (Straight Line)
Motion in straight path with constant velocity = velocity (m/s) displacement (m) Δt = time span (s) Make the position vs time graph if the constant velocity is 20 m/s!

6 Negative direction Make the position vs time graph if the constant velocity is -20 m/s!

7 (Motion in straight path with constant velocity)
EXERCISE (PR disubmit senen 26 September 2011) (Motion in straight path with constant velocity) A car moves forward in straight path 100 meters long. The speed is 10 m/s. Find the time needed by the car! A bus moves in straight way with velocity 120 km/h. Please convert the speed into m/s! The motorcycle goes form A at with speed 90 km/h, the ambulance goes from B at 7.30 with speed 100 km/h. Determine the place where they meet and what is the time? A B 240 km

8 a. kecepatan benda tersebut!
Sebuah benda mungkin bergerak dengan grafik seperti di bawah. Tentukan: a. kecepatan benda tersebut! b. Posisi benda tersebut pada 20 detik pertama! c. tentukan jarak yang ditempuh selama 20 detik! 10 t (s) 50 s (m) 10 -25 t (s) s (m) A B

9 a. kecepatan benda tersebut!
Sebuah benda mungkin bergerak dengan grafik seperti di bawah. Tentukan: a. kecepatan benda tersebut! b. Posisi benda tersebut pada 20 detik pertama! c. tentukan jarak yang ditempuh selama 20 detik! 10 t (s) 50 s (m) t (s) 50 s (m) A B

10 Motion in straight path with constant acceleration
= acceleration (m/s2)