Question

7. A motorboat starting from rest on a lake accelerates in a straight line at a constant rate of

3.0 m/s2 for 8.0 s. How far does the boat travel during this time?

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Answer 1

Explanation:

given : acceleration (a)= 3.0m/s²

initial velocity (u)= 0

time (t) = 8 sec

distance (s) = ?

therefore, s = ut+1/2at²

s = 0×8+ 1/2×3m/s²×(8)²

s = 0+ 1/2×3m/s²×64

s= 3×32

s= 96m

Answer 2

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