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wat ever
Mission
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Use Pythagoras' Theorem to find its value. For example, if it was moving at 3ms-1 in the x direction and 4ms-1 in the y direction, its absolute velocity would be the square root of (9+16), 5ms-1.
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4ms
1500 j
The answer would be 80kg/ms or 80N because: force= mass x acceleration = 20kg x 4ms =80kg/ms =80N
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No. If you are talking about "velocity", then you are talking about magnitude and direction - i.e., vectors. You can't really compare vectors, in the sense of one vector being greater than another; but you can compare their magnitudes - and the magnitude is always non-negative. In this sense, you can't even have a "velocity of minus 4 m/s" - you would have a "velocity of 4 m/s in a certain direction".
a few things missing: - How fast is the acceleration? - How long does it take to go from 4ms to 20ms?
KE = 1/2mV^2 ( mass in kilograms; 10 grams = 0.01 kilograms ) KE = 1/2(0.01 kg)(4 m/s)^2 = 8.0 X 10^-2 Joules of energy