A bullet of 40 gm moving with a speed of 90 m/s enters a heavy wooden block and is stopped after a distance of 60 cm. what is average resistive force exerted by block?
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F=ma
F =40×90÷60
F= 60N
resistive force will be negative so F=-60N
F =40×90÷60
F= 60N
resistive force will be negative so F=-60N
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