
USAHA

Flashcard
•
Science
•
8th Grade
•
Hard
Ni S.Pd
Used 1+ times
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10 questions
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1.
FLASHCARD QUESTION
Front
Bola bermassa 100 gram dilemparkan ke bawah dengan kecepatan 1m/s. Jika ketinggian bola 4 m, berapa energi mekanik bola saat dilemparkan?
Back
3,97 J
2.
FLASHCARD QUESTION
Front
Ardi memiliki berat 392 N. Suatu pagi dia berlari dengan kecepatan 1,5 m/s. Energi kinetik Ardi saat berlari sebesar ... J (g=9,8 m/s²)
Back
45 J
3.
FLASHCARD QUESTION
Front
Perhatikan gambar disamping !
Massa buah kelapa 1kg. Jika kecepatan buah kelapa di A 10 m/s, energi mekanik di titik A sebesar ... J
Back
99 J
4.
FLASHCARD QUESTION
Front
Mobil dengan kecepatan 20 m/s berjalan konstan selama 20 sekon. Jika gaya yang digunakan oleh mobil adalah 180 N, tentukan daya mobil selama 20 sekon!
Back
3.600 watt
5.
FLASHCARD QUESTION
Front
Sebuah bola ditendang mengalami perubahan kecepatan dari 10 m/s menjadi 15 m/s selama 0,05 sekon. Jika massa bola 400 gram, berapa daya yang dikeluarkan dalam kejadian tersebut?
Back
500 W
6.
FLASHCARD QUESTION
Front
Seorang pegawai toko buku Murah menata 20 buku ke atas rak setinggi 100 cm. Setiap buku memiliki massa 1,5 kg. Jika waktu yang dibutuhkan 30 s, daya yang dikeluarkan pegawai tersebut sebesar ... W (g=9,8 m/s²)
Back
9,8 W
7.
FLASHCARD QUESTION
Front
Sebuah benda mempunyai kecepatan tetap 25 m/s. Jika massa benda tersebut 30 kg, besarnya energi kinetik benda ... joule
Back
9.375 joule
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