please answer both questions and explain how you got the answer don\'t forget th

Question

please answer both questions and explain how you got the answer don't forget the unit's this is due today your help is appreciated. thank you

Item 10 10 of 10 A Jet-Propelled Squid Squids can move through the water using a form of jet propulsion. Suppose a squid jets forward from rest with constant acceleration for 0.174 s, moving through a distance of 0.180 m. The squid then turns off its jets and coasts to rest with constant acceleration. The total time for this motion (from rest to rest) is 0.410 s, and the total distance covered is 0.423 m. Part A

Explanation / Answer

here,

A)

for accelration phase

time taken , t1 = 0.174 s

distance travelled , s1 = 0.18 m

let the accelration be a1

s1 = 0 + 0.5 * a1 * t1^2

0.18 = 0 + 0.5 * a1 * 0.174^2

solving for a1

a1 = 11.9 m/s^2

the constant accelration is 11.9 m/s^2

the final speed after t1 , u1 = 0 + a1 * t1

u1 = 2.1 m/s

B)

t2 = 0.41 - t1 = 0.236 s

s2 = 0.423 - s1 = 0.243 m

let the accelration be a2

s2 = u1 * t2 + 0.5 * a2 * t2^2

0.243 = 2.1 * 0.236 + 0.5 * a2 * 0.236^2

solving for a2

a2 = - 9.1 m/s^2

the accelration is - 9.1 m/s^2

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