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cc21392001
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physics homework help ASAP thx!
thx so much, here they are:
48. A block of mass 0.6 kg slides 6.0 m down a frictionless ramp inclined at 20 degrees to the horizontal. It then travels on a rough horizontal surface where coefficient of kinetic friction is 0.50.
a) what is its speed after traveling 1.00 m on the rough surface?
b) what distance does it travel on this horizontal furface before stopping?
68. An electron moves with a speed of 0.995c.
a) what is its kinetic energy?
b) if you use the classical expression to calculate its kinetic energy, what percentage error would result?
k = mc^2((1/(1-(v/c)^2))-1)
thx a lot
thx so much, here they are:
48. A block of mass 0.6 kg slides 6.0 m down a frictionless ramp inclined at 20 degrees to the horizontal. It then travels on a rough horizontal surface where coefficient of kinetic friction is 0.50.
a) what is its speed after traveling 1.00 m on the rough surface?
b) what distance does it travel on this horizontal furface before stopping?
68. An electron moves with a speed of 0.995c.
a) what is its kinetic energy?
b) if you use the classical expression to calculate its kinetic energy, what percentage error would result?
k = mc^2((1/(1-(v/c)^2))-1)
thx a lot