Question

A volcano launches a lava bomb straight upward with an initial speed of 23 m/s. Taking upward to be the positive direction, find the speed and direction of the lava bomb after 1.6s and 3.5 have elapsed.

Answer 1

@ab60093

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Answer 2

Let's first do it for 1.6s
use the equation v=u-at and find the value of v. Take u=23, a=9.8 and t=1.6

Answer 3

so v would be 7.32 i think

Answer 4

yes, it will be +7.32. This means the bomb will have a velocity of 7.32 m/s in upward direction.

Answer 5

Now similarly calculate for t=3.5

Answer 6

so downwards 11.335. ok thanks

Answer 7

Yes !
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Answer 8

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