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bulgar [2K]
3 years ago
8

What is the speed acquired by a freely falling object 4 seconds after being dropped from a rest position? Use units of meter per

second (m/s) and assume acceleration from gravity is 10 m/s2.
Physics
1 answer:
gizmo_the_mogwai [7]3 years ago
6 0

speed = 40 m/s

Explanation:

Since the object is dropped, V0y = 0.

Vy = V0y - gt

= -(10 m/s^2)(4 s)

= -40 m/s

This means that its velocity is 40 m/s downwards. Its speed is simply 40 m/s.

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Answer:

9) This is a case of deceleration

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b) acceleration is the change in velocity with time

11)

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13) more information is needed to answer the question

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14)

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10 - 20/ 25

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15)

a=v-u/t

From rest, u=0

8 - 0/10

a= 8/10

a= 0.8 ms^-2

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