Mohlala oa lipotso tsa matla a kinetic

3 Mehlala ea lipotso tsa matla a kinetic

1. Lintho A le B li na le boima bo lekanang 'me motsamao o mong le o mong o tsamaea ka lebelo joalokaha ho bontšitsoe setšoantšong se ka tlase:
Karolelano ea matla a kinetic pakeng tsa ntho A le ntho B ke...

K. 1: 2
B. 1: 4
C. 2: 1
D. 4: 1

Puisano

Lintho A le B li na le boima bo tšoanang. Boima ba lintho A le B bo tšoantšetsoa ke m.
Foromo ea matla a kinetic:
EK = ½ mv²
Tlhaloso: EK = matla a kinetic, m = boima, v = lebelo
Matla a kinetic a ntho A :
EK_A = ½ mv² = ½ m 2² = ½ m (4) = 2 m
Matla a kinetic a ntho B :
EK_B = ½ mv² = ½ m 4² = ½ m (16) = 8 m
Papiso ea matla a kinetic a ntho A le ntho B:
EK_A : EK_B
2 m : 8 m
2: 8
1: 4
Karabo e nepahetseng ke B.

2. Sheba setšoantšo sa bese le koloi e tsamaeang ka tlase!
Boima ba bese ke 10.000 kg mme boima ba koloi ke 500 kg, kahoo karolelano ea matla a kinetic a bese le matla a kinetic a koloi ke…

K. 2: 1
B. 4: 1
C. 5: 1
D. 20: 1

Puisano
Matla a kinetic a bese:
EK = ½ mv² = ½ (10.000)(10)² = (5000)(100) = 500.000
Matla a kinetic a koloi:
EK = ½ mv² = ½ (500)(20)² = (250)(400) = 100.000
Papiso ea matla a kinetic a bese le matla a kinetic a koloi ke:
500.000: 100.000
5: 1
Karabo e nepahetseng ke C.

3. Sheba setšoantšo!
Koloi e tsamaea ka lebelo le fapaneng ho tloha ho A ho ea ho B. Karolelano ea matla a kinetic ao koloi e nang le 'ona ntlheng ea A le ntlheng ea B ke…
K. 1: 2
B. 1: 4
C. 2: 1
D. 4: 1
Puisano
Matla a kinetic a koloi ntlheng ea A:
EK = ½ mv² = ½ m (10)² = ½ m (100) = 50 m
Matla a kinetic a koloi ntlheng ea B:
EK = ½ mv² = ½ m (20)² = ½ m (400) = 200 m
Papiso ea matla a kinetic a koloi ntlheng ea A le ntlheng ea B ke:
50 m : 200 m
50: 200
1: 4
Karabo e nepahetseng ke B.

Mohloli oa lipotso:

Lipotso tsa Tlhahlobo ea Naha ea Saense ea Sekolo se Phahameng sa Bana ba Banyenyane/Sekolo se Phahameng sa Boislamo