A small car weighing 50 kN and moving at 54 kmph along the main road collide of 100 kN which emerges at 18 kmph from a cross-road at right angles to mai vehicles lock after collision, what will be the magnitude and direction of resultant.
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Crop protection is the science and practice of managing plant diseases, weeds and other pests (both vertebrate and invertebrate)that damage agricultural crops and forestry. Agricultural crops include field crops (maize, wheat, rice, etc.), vegetable crops (potatoes, cabbages, etc.) and fruits. The crops in field are exposed to many factor. The crop plants may be damaged by insects, birds, rodents, bacteria, etc.
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