A jet plane lands with a speed of 87 m/s and can accelerate at a maximum rate of −4.10 m/s2 as it comes to rest. (a) From the in
stant the plane touches the runway, what is the minimum time needed before it can come to rest?
1 answer:
Answer:
21.22s
Explanation:
initial velocity u=87m/s
acceleration a=-4.10 m/s²
velocity v=0
time t=?
From Newton's first law of motion
V=u+at
0=87-4.10t
-87=-4.1t
t= -87/-4.1
t= 21.22 s
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