Monday, January 14, 2013

Contoh Soal Tumbukan dan Pembahasan

1. Bola A dan bola B bergerak di atas bidang datar segaris kerja. Bola A dengan massa 2 kg bergerak ke kanan dengan kecepatan 4 m/s dan bola B dengan massa 1 kg bergerak ke kiri dengan kecepatan 6 m/s. Kedua bola bertumbukan sentral. Hitunglah kecepatan masing-masing bola setelah tumbukan jika tumbukan kedua bola:
a. tidak lenting sama sekali
b. lenting sebagian dengan e = 0,8
c. lenting sempurna

Pembahasan soal mengenai tumbukan

2. Sebuah peluru dengan massa 20 gram ditembakkan dengan senapan yang bermassa 2 kg. Jika kecepatan peluru saat meninggalkan moncong senapan = 10 m/s, maka berapakah kecepatan senapan setelah menembakkan peluru?
Penyelesaian
Pembahasan soal mengenai materi tumbukan fisika sma 
Pembahasan soal mengenai materi tumbukan fisika sma a 


Tanda (-) menyatakan arah gerak senapan ke belakang
3. Sebuah gaya konstan bekerja pada benda yang mula-mula diam sehingga dalam waktu 0,1 sekon kecepatan benda menjadi 4 m/s. Jika massa benda 500 gram, berapakah besar gaya tersebut?
Penyelesaian
Diketahui:
v1 = 0 ; Δt = 0,1 sekon
v2 = 4 m/s ; m = 500 gram = 0,5 kg
Ditanya: F ?
Pembahasan soal mengenai materi tumbukan fisika sma c
4. Seseorang dengan massa 50 kg naik perahu yang bermassa 200 kg yang bergerak dengan kecepatan 10 m/s. Tiba-tiba orang tersebut meloncat dari perahu dengan kecepatan 2 m/s searah dengan arah gerak perahu. Berapakah kecepatan perahu sesaat orang meloncat?
Penyelesaian
Pembahasan soal mengenai materi tumbukan fisika sma d

Penjelasan Materi Lainnya



3 comments:

  1. itu jawaban yang a untuk letting tidak sama sekali salah ya?

    ReplyDelete
  2. Om itu yang orang melompat dari perahu vp'=negatif karena perahu didorong kebelakang saat orang loncat ke depan

    ReplyDelete
  3. Karna perahu besar jadi perahunya tidak mundur gan

    ReplyDelete

 
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