Complete the table-Am kg v p- m v kgm - s m - s 85 60 - - 2-5 6-25 B m kg v m - s 2 F - m a N 25 1-2 - 1-5 - 2-25

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Standard IX

Physics

Physical Quantities and Measurement

Complete the ...

Question

Complete the table:

A.

m (kg)

v (m/s)

p = mv (kgm/s)

85

60

………

………

2.5

6.25

B.

m (kg)

v (m/s²)

F = ma (N)

25

1.2

………

1.5

………

2.25

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Solution

A.

m(kg)

v(m/s)

p = m.v (kgm/s)

85

60

5100

2.5

2.5

6.25

First part, p = mv

⇒ p = 8560 = 5100 kgm/s

Second part, p = mv

⇒ 6.25 = 2.5m

⇒ m = 2.5 kg

B.

m(kg)

a(m/s²)

F = ma (N)

25

1.2

30

1.5

1.5

2.25

First part, F = ma

⇒ F = 251.2 = 30 N

Second part, F = ma

⇒ 2.25 = 1.5a

⇒ a = 1.5 m/s²

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m(kg)	a(m/s²)	F = ma (N)
25	1.2	30
1.5	1.5	2.25

Complete the table: A. m (kg) v (m/s) p = mv (kgm/s) 85 60 ……… ……… 2.5 6.25 B. m (kg) v (m/s2) F = ma (N) 25 1.2 ……… 1.5 ……… 2.25

A. m(kg) v(m/s) p = m.v (kgm/s) 85 60 5100 2.5 2.5 6.25 First part, p = mv ⇒ p = 8560 = 5100 kgm/s Second part, p = mv ⇒ 6.25 = 2.5m ⇒ m = 2.5 kg B. m(kg) a(m/s2) F = ma (N) 25 1.2 30 1.5 1.5 2.25 First part, F = ma ⇒ F = 251.2 = 30 N Second part, F = ma ⇒ 2.25 = 1.5a ⇒ a = 1.5 m/s2

Complete the table:

A.

m (kg)

v (m/s)

p = mv (kgm/s)

85

60

………

………

2.5

6.25

B.

m (kg)

v (m/s²)

F = ma (N)

25

1.2

………

1.5

………

2.25