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but the answer says b...

well while i was searching for help, i found a website that said this Recombine the resulting components, if needed, to determine the object's total space motion. and that put me off. hsveight, thats a really cool name, u seem really funny, have my number.

but seeing as its been shot into the air and gravity which is a negative acceleration of 9.8m/s is there, shouldnt it be different to the initial velocity?especially as they included the 3sec bit.

answer says b can u show me what u did? my main question is how do u recombine the 2 components?

i need some help with this question a model rocket is launched from the earth at and angle of 55 degrees from the vertical with an initial velocity of 120m/s. what is the projectiles speed 3seconds later? a) 68.8m/s b)98.3m/s c)106m/s d) 120m/s i got the two components of motion to be uh =...