Question

can you tell me plzz​

Answer 1

Answer:

1) v = 2 + (4 × 3)

= 2 + 12

v = 14 m/s

2) 20 = u + (5 × 2)

20 = u + 10

u = 20 - 10

u = 10 m/s

3) s = (5 × 3) + 1/2 × (12 × (3²))

s = 15 + 1/2 × 12 × 9

= 15 + (6 × 9)

= 15 + 54

s = 69 m

4) 92 = (7 × 4) + 1/2 × a × 4²

92 = 28 + 1/2 × a × 16

92 = 28 + (a × 8)

98 - 28 = (a × 8)

70 = a × 8

a = 70 /8

a = 8.75 m/s²

5) 8² = 4² + 2a × 3

64 = 16 + 2a × 3

64 - 16 = 2a × 3

48 = 2a × 3

2a = 48 / 3

2a = 16

a = 16 / 2

a = 8 m/s²

6) 10² = u² + (2 × 5 × 8.4)

100 = u² + (10 × 8.4)

100 = u² + 84

100 - 84 = u²

16 = u²

u = √(16)

u = 4 m/ s

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