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oops ok thanks.
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Physics multiple choice help
- Thread starter tanmaydube
- Start date
- Messages
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oops ok thanks.
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thank u soo much!!can u also anser these ques oct/2009/12/q9 and oct/2010/12 ques 5 14 and 8
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Q9) F=m(v1-v2)/t
60=30(3-v2)/0.5
1=3-v2
v2=2 ms^-1
Q5) x=(1.27-0.83) ± (0.02+0.01)
x=0.44 ± 0.03
% uncertainty= 0.03/0.44 x 100
=6.81 % = 7 % (1 sig fig)
Q8) s=ut+1/2at^2
40=u(12)+1/2a(12)^2
40=12u+72a
u=(40-72a)/12
u=(10-18a)/3
80=u(18)+1/2a(18)^2
80=18u+162a
80=18((10-18a)/3)+162a
80=60-108a+162a
a=-0.37 ms^-2
Q14) WD= gain in potential energy + WD against friction
= 200 x 1.5 + 150 x 3 =750 N
60=30(3-v2)/0.5
1=3-v2
v2=2 ms^-1
Q5) x=(1.27-0.83) ± (0.02+0.01)
x=0.44 ± 0.03
% uncertainty= 0.03/0.44 x 100
=6.81 % = 7 % (1 sig fig)
Q8) s=ut+1/2at^2
40=u(12)+1/2a(12)^2
40=12u+72a
u=(40-72a)/12
u=(10-18a)/3
80=u(18)+1/2a(18)^2
80=18u+162a
80=18((10-18a)/3)+162a
80=60-108a+162a
a=-0.37 ms^-2
Q14) WD= gain in potential energy + WD against friction
= 200 x 1.5 + 150 x 3 =750 N