An airplane starts from rest and accelerates at a constant rate of 3.00 m/s2 for 30.0 s before leaving the ground.
a. how far did it move?
b. how fast was it going when it took off?
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b)
a = 3m/s²
t = 30s
u = 0
v = u + at
→ 0 + 3(30)
= 90m/s
a)
2as = v² - u²
2(3)(s) = 90² - 0²
6s = 8100
s = 8100 / 6
s = 1350m = 1km 350m
∴ It moved 1km 350m and it took off at a speed of 90m/s
a = 3m/s²
t = 30s
u = 0
v = u + at
→ 0 + 3(30)
= 90m/s
a)
2as = v² - u²
2(3)(s) = 90² - 0²
6s = 8100
s = 8100 / 6
s = 1350m = 1km 350m
∴ It moved 1km 350m and it took off at a speed of 90m/s
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