A rocket of mass 5.0kg is travelling horizontally with a speed of 200ms^-1 when it explodes into two parts.
One part of mass 3.0kg continuos tin the original direction with a speed of 100ms^-1 and the
other part continues in the same direction.

Calculate tho unknown spood of the other part.

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Explanation:

a.) travels faster in solids because the particles are closer together.

air is a gas water is a liquid

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west