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7.2 tenaga keupayaan dan tenaga kinetik (sains tingkatan 3)

Authored by MOHD Moe

Science

3rd Grade

Used 2K+ times

7.2 tenaga keupayaan dan tenaga kinetik (sains tingkatan 3)
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10 questions

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1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Apakah daya yang bertindak ke atas sebuah kotak apabila diangkat?

what is the force that reacts on a box when it was lifted?

daya magnet / magnetic force

daya geseran / frictional force

daya tarikan graviti / gravitational force

tiada daya terlibat / no force involved

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

apakah tenaga bagi spring yang dimampatkan?

what is the energy of a compressed spring?

tenaga kinetik / kinetic energy

tenaga keupayaan kenyal / elastic potential energy

tenaga mekanikal / mechanical energy

tenaga keupayaan graviti / gravitational potential energy

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

mengapakah sebuah lori yang sedang bergerak mempunyai tenaga kinetik yang tinggi?


why does a moving lorry have high kinetic energy?

lori boleh mengatasi banyak rintangan udara / the lorry can overcome more air resistance

jisim lori itu besar / the mass of a lorry is big

lori itu lebih berkuasa / the lory is powerful

lori mempunyai tayar yang besar / the lorry has big tyres

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

hitung tenaga kinetik helang itu dengan jisim 4kg apabila terbang pada kelajuan 10ms-1


calculate the kinetic energy of the eagle with mass of 4kg if it flies at a speed of 10m/s

20

40

200

400

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

rajah menunjukkan seorang buruh menarik satu baldi berisi bata seberat 20kg dari atas tanah ke satu ketinggian 15m, hitung tenaga graviti =mgh


diagam show a labourer pulled a bucket of bricks with weight of 20kg from the ground to a height of 15m, calculate gravitational force=mgh

3 J

30 J

300 J

3000 J

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

hitung tenaga kinetik Ali jika dia menolak kereta sorong itu pada kelajuan 2ms-1. jisim kereta sorong adalah 50kg


calculate the kinetic energy by ali if he push the wheelbarrow at a speed of 2m/s. the mass of the wheelbarrow is 50kg.


1/2 MV2

1 J

10 J

100 J

1000 J

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

4 biji kelapa dengan sama jisim dilepaskan pada ketinggian yang berbeza ke permukaan tanah dengan ketinggian A = 10m, B= 20m, C=30m dan D=5m, yang manakah akan menghasilkan lekukkan paling dalam pada permukaan tanah

A

B

C

D

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