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natasha.aries

  • 2 years ago

6. A 150 kg motorcycle falls off a bridge and drops straight down into the water. The motorcycle is moving at 12.5 m/s when it hits the water. If the motorcycle comes to rest 7.00 m beneath the surface, determine the average force exerted by the water. A 1050 N B 1670 N C 1880 N D 3350 N

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  1. cesckay
    • 2 years ago
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    B?

  2. cesckay
    • 2 years ago
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    find accelerations using kinematics... then use F=ma

  3. natasha.aries
    • 2 years ago
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    howw?

  4. cesckay
    • 2 years ago
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    v2= u2 + 2as to find a then use f=ma

  5. natasha.aries
    • 2 years ago
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    what is u?

  6. cesckay
    • 2 years ago
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    u= initial velocity v= final velocity

  7. natasha.aries
    • 2 years ago
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    okay thanks! i have a few more ?s but ill be back in 30mins its ok if u go to sleep! thanks for all ur help! one last question though whats the formula for thermal energY?

  8. cesckay
    • 2 years ago
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    i will be around here. revising... its just 10pm here.. for the energy question, relative to that question, Potential energy( delta E) = kinetic energy (work done) + thermal energy (Q)

  9. natasha.aries
    • 2 years ago
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    thanks!

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