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प्रश्न
Complete the following table.
| u (m/s) | a (m/s2) | t (sec) | v = u + at (m/s) |
| 2 | 4 | 3 | ______ |
| ______ | 5 | 2 | 20 |
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उत्तर
| u (m/s) | a (m/s2) | t (sec) | v = u + at (m/s) |
| 2 | 4 | 3 | 14 |
| 10 | 5 | 2 | 20 |
Explanation:
(i)
u = 2; a = 4; t = 3; v = u + at (m/s) = ?
v = u + at (m/s)
= 2 + 4 × 3
= 2 + 12
∴ v = 14
(ii)
u = ?; a = 5; t = 2; v = u + at (m/s) = 20
v = u + at (m/s)
⇒ 20 = u + 5 × 2
⇒ 20 = u + 10
⇒ 20 - 10 = u
∴ u = 10
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