Newton’s second la-the particle under anet force
1-a 3kg object is moving in plane with its x and y coordnates given by x=5t^2-1
and y=3t^3+2 where x and y are meters and t is seconds
find the magnitude of the net force acting on this subject
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2-three forces given by F1=-2i+2j N
F2=5i-3j N
F3=-45i N
act on object to give acceleration of magntude 3,75m/s^2
1-what is the direction of the cceleration
2-what is the mass of object
3-if the object is intiallt at rest what speed after 10s
4-what are the velocity compomemts of the object after10s
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3-an electron of mass 9.11x10^-31 kg has an intial speed of 3x10^5m/s It travels in a straight line and its speed increase to7x10^5 m/s in adistance of 5cm assuming that its acceleration is scntant
1-determamine the net force exerted in the electron
2-compare this force with weight of electron
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مشاركة: Newton’s second la-the particle under anet force
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