Advertisements
Advertisements
Question
Complete the following table.
| u (m/s) | a (m/s2) | s (m) | v2 = u2 + 2as (m/s)2 |
| 4 | 3 | ______ | 8 |
| ______ | 5 | 8.4 | 10 |
Chart
Fill in the Blanks
Solution
| u (m/s) | a(m/s2) | s(m) | v2 = u2 + 2as (m/s)2 |
| 4 | 3 | 8 | 8 |
| 4 | 5 | 8.4 | 10 |
Explanation:
(i) u = 4, a = 3, v = 8, s = ?
v2 = u2 + 2as
⇒ (8)2 = (4)2 + 2 × 3 × s
⇒ 64 = 16 + 6s
⇒ 64 - 16 = 6s
⇒ 48 = 6s
⇒ `48/6` = s
∴ s = 8
(ii) a = 5, s = 8.4, v = 10, u = ?
v2 = u2 + 2 as
⇒ (10)2 = u2 + 2 (5 × 8.4)
⇒ 100 = u2 + 84
⇒ 100 - 84 = u2
⇒ 16 = u2
∴ u = 4
shaalaa.com
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Find the initial velocity of a car which is stopped in 10 seconds by applying brakes. Retardation due to brakes is 2.5 ms-2.
Derive the equations of motion by graphical method.
Complete the following table.
| u (m/s) | a (m/s2) | t (sec) | v = u + at (m/s) |
| 2 | 4 | 3 | ______ |
| ______ | 5 | 2 | 20 |
Complete the following table.
| u (m/s) | a (m/s2) | t (sec) | s = ut + `1/2`at2 (m) |
| 5 | 12 | 3 | ______ |
| 7 | ______ | 4 | 92 |
