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alukav5142 [94]
3 years ago
9

A dolphin accelerates at -1.77m/s^2 for 3.33s and ends with a velocity of -8.77m/s. What is the displacement of the dolphin in t

hat time
Physics
1 answer:
Irina-Kira [14]3 years ago
6 0

vf=vi+at

8.77=vi+1.77 x 3.33

8.77 = vi+5.8941

vi=2.8759

vf²=vi²+2ad

8.77²=2.8759²+2x 1.77 x d

76.9129=8.27 + 3.54d

d=19.39 m

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A 763 kg car moving at 26 m/s brakes to a stop. The brakes contain about 15 kg of iron that absorb the energy. What is increase
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\Delta T=38.20^{\circ}

Explanation:

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When the car is in motion, it will possess kinetic energy. It is given by :

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\Delta T is the increase in temperature of the brakes

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