science
Grade-7
Easy

Question

A monkey falls from the top of a tall tree reaches a velocity of ___ m/s in 20 s.

hintHint:

Under freefall condition the acceleration will always be 9.8 ms-2

The correct answer is: 196


    Given:
    Initial velocity (u) = 0
    Final velocity (v) = ?
    Acceleration (a) = 9.8ms-2
    Time taken (t) = 20s
    Formula used: 
    v = u + at 
    Solution:
    v space equals space 0 space plus space 9.8 space cross times space 20 space
v equals space 196 m s to the power of negative 1 end exponent
    ANSWER: 
    A monkey falls from the top of a tall tree reaches the ground with a velocity of 196ms-1 in 20s.

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