Question

36. An object falls from a bridge that is 45m above the water. It falls directly into a small row - boat
moving with constant velocity that was 12m from the point of impact when the object was released.
What was the speed of the boat ? (g = 10 ms?)
1) 2 m/s
2) 3 m/s
3) 5 m/s
4) 4 m/s

please answer fast

the best one will be marked as brianliest​

Answer 1

SOLUTION

Time taken to reach to the boat is t.

height (h)= 45m

$= > h = ut + \frac{1}{2} at {}^{2} \\ = > 45 = 0 + \frac{1}{2} gt \\ = > {t}^{2} = \frac{45}{10} \times 2 \\ \\ = > t = 3 \: \: seconds$

Given,

distance travelled by boat = 12m

Time taken will be (t) which is equal to 3 seconds

Velocity= 12/3 = m/s

=) 4m/sec.

OPTION (4)✓

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