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MODUL BANTAL CIKGU NIK_SET E (Gravity)

Authored by SITI Moe

Physics

10th Grade

Used 5+ times

MODUL BANTAL CIKGU NIK_SET E (Gravity)
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5 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Sebuah satelit buatan manusia mengorbit Bumi pada jarak 1.45×104 km dari pusat Bumi. Bulan mengorbit Bumi pada jarak 3.84×105 km sekali dalam tempoh 27.3 hari. Berapa lamakah masa yang diambil oleh satelit itu untuk mengorbit Bumi?

A man-made satellite orbits the Earth at a distance of 1.45×104 km from Earth’s center. The Moon orbits the Earth at a distance of 3.84×105 km once every 27.3 days. How long does it take the satellite to orbit the Earth?

0.200 hari / 0.200 days

3.07 hari / 3.07 days

243 hari / 243 days

3721 hari / 3721 days

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Antara berikut yang manakah benar tentang daya memusat kecuali

Which of the following is true about the centripetal force except

Situasi: Satu bola diikat pada hujung satu tali dipusingkan di atas kepala.

Daya memusat dihasilkan oleh: Tegangan tali.

Situation: A ball tied to the end of a string whirling above our head.

Centripetal produced by: Tension of the string.

Situasi: Sebuah kereta bergerak di selekoh membulat.

Daya memusat dihasilkan oleh: Geseran antara tayar dengan permukaan jalan.

Situation: A car moving in a roundabout.

Centripetal produced by: Friction between the road and the tires.

Situasi: Kapal angkasa yang sedang mengorbit bumi.

Daya memusat dihasilkan oleh: Daya graviti.

Situation: A spacecraft orbiting the earth.

Centripetal produced by: Force of gravity.

Situasi: Sekeping syiling diputar di atas meja yang berpusing.

Daya memusat dihasilkan oleh: Berat duit syiling.

Situation: A coin rotating on a turntable.

Centripetal produced by: Weight of the coin.

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Rajah menunjukkan sebuah meja mendatar berputar pada kelajuan yang malar secara berterusan apabila ia dilihat dari atas. Duit syiling di atas meja berputar pada arah seperti ditunjukkan dalam rajah. Apakah arah laju linear, pecutan memusat dan daya memusat yang dialami oleh duit syiling itu?

Diagram shows a horizontal table rotates at a constant speed as it is viewed from above. The coin on the table rotates in direction as shown in diagram. What is directions of the linear speed , the centripetal acceleration and the centripetal force experiences by the coin?

Media Image
Media Image
Media Image
Media Image

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Berapakah daya yang diperlukan untuk mengekalkan gerakan membulat berjejari 5 m bagi sebuah keretapi mainan berjisim 10 kg apabila kereta api mempunyai kelajuan linear 0.4 m s-1?

What is the force required to keep a 10 kg model train moving in a circle of radius 5 m when the train has a linear speed of 0.4 m s-1?

0.08 N

0.80 N

0.20 N

0.32 N

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Daya geseran di antara roda dan permukaan jalan adalah 1000 N, apabila kereta bergerak di bulatan dengan halaju linear 15 km j-1. Apakah laju linear kereta itu apabila daya geseran antara roda dan permukaan jalan itu ialah 4000 N.

The frictional force between the wheels and the surface of the road is 1000 N , when the car moves in a roundabout with a linear speed 15 km j-1. What is the linear speed of the car when the frictional force between the wheels and the surface of the road is 4000 N.

8 km j-1

15 km j-1

30 km j-1

60 km j-1

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