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  1. N

    Momentum and movement basic GCSE Quest

    is the answer 40% ? (0.5x 0.005) x 40^2
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    Momentum and movement basic GCSE Quest

    sorry but you have to dumb this down I'm doing GCSEs and i don't understand what you mean by the Vs, i also have no idea why it slows down
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    Momentum and movement basic GCSE Quest

    i've finished the first part (a) i can't do b and c for b i think because it already has reached it's fastest speed it must slow down from then on. what's the best way to word this? c. for this question i think it's o.5(0.005) x velocity^2 but i don't know how to work out velocity i...
  4. N

    Momentum and movement basic GCSE Quest

    for b i think because it already has reached it's fastest speed it must slow down from then on. what's the best way to word this? c. for this question i think it's o.5(0.005) x velocity^2 but i don't know how to work out velocity i know it's v=d/t.
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    Momentum and movement basic GCSE Quest

    when a gun is fired a very large force acts on the bullet for a very short time. formula that's given: force x time = change in momentum (kg m/s) an average force of 4000 acts for 0.01 seconds on a bullet of 50g mass. DONE THIS PART b. the bullet is fired...
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    Momentum and movement basic GCSE Quest

    did i get the question right?
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    Simple and basic momentum and work done Qs!

    did i get the question right?
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    Simple and basic momentum and work done Qs!

    so it's 240/35 ? = 6.9m/s is that the final answer and it's not squared?
  9. N

    Simple and basic momentum and work done Qs!

    3 m/s is it squared but how can that be the answer when it's already written in the question?
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    Simple and basic momentum and work done Qs!

    ok thanks so what would i have to do to find how fast the boat moved in the opposite direction?
  11. N

    Momentum and movement basic GCSE Quest

    you are very kind for helping me. 80kg 240 kg m/s 105 kg m/s 35kg no idea for velocity i know formula is f=d/t but you aren't given time or distance.
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    Simple and basic momentum and work done Qs!

    how can it be 3m/s^2 because that ids already given in the question. i think i remeber my teacher saying that it's: 80 + 35= 115 115 x 3 = 375 375/35 = 1.3...m/s is that correct?
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    Momentum and movement basic GCSE Quest

    i think i remeber my teacher saying that it's: 80 + 35= 115 115 x 3 = 375 375/35 = 1.3...m/s is that correct?
  14. N

    Momentum and movement basic GCSE Quest

    i still don't understand i don't understand what formula to use as well.
  15. N

    Simple and basic momentum and work done Qs!

    is this correct? 80 x 3 = 240 80/240 = 0.3 (which is the velocity) so it's 0.3m/s^2
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    Simple and basic momentum and work done Qs!

    thanks which formulae do i use? m = mass x v or mom before = mom after ?
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    Momentum and movement basic GCSE Quest

    ok thanks but how do i answer the question?
  18. N

    Momentum and movement basic GCSE Quest

    Mr Green, mass 80 kg, stepped off a boat of mass 35 kg at a speed of 3m/s. how fast did the boat move in the opposite direction? i have no idea how to work it out?
  19. N

    Simple and basic momentum and work done Qs!

    Mr Green, mass 80 kg, stepped off a boat of mass 35 kg at a speed of 3m/s. how fast did the boat move in the opposite direction?
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