8. A body is moving with a velocity of 15m/s and it comes to rest in 20m/s, what was the acceleration?
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Answered by
2
ahoy!!
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u = 15m/s
v = 0m/s ( at rest )
a = ?
s= 20m
we know that:
0 = 15² + 2 × a × 20
-225 = 40 a
a = -225/ 40
a = - 5.6 m/s
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_______
u = 15m/s
v = 0m/s ( at rest )
a = ?
s= 20m
we know that:
0 = 15² + 2 × a × 20
-225 = 40 a
a = -225/ 40
a = - 5.6 m/s
__________________________________________________________
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Answered by
2
Hi,
Here is your answer,
u (Initial Velocity) = 15 m/s
v (Final velocity)= 0 m/s
s (Displacemen) = 20 m/s
We need to find the acceleration
v² - u² = 2as
→ 0 = (15)² +2(a)(20)
→ - 225 = 40a
→ a = -225/40
→ a = -5.6 m/s
Here is your answer,
u (Initial Velocity) = 15 m/s
v (Final velocity)= 0 m/s
s (Displacemen) = 20 m/s
We need to find the acceleration
v² - u² = 2as
→ 0 = (15)² +2(a)(20)
→ - 225 = 40a
→ a = -225/40
→ a = -5.6 m/s
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