The setting portrays athletes gathering from across the country after months of training, surrounded by cheering spectators. This creates an electric, high-stakes atmosphere filled with intense anticipation and excitement for the climactic final race.
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Using the third equation of motion, the bullet acceleration is minus 10000 meters per second squared. Multiplying by the mass of 0.05 kilograms gives a retarding stopping force of 500 newtons acting opposite to motion.
From Fig. 6.41, the slope of the velocity-time line gives an acceleration of 2.5 m s-2. Multiplying this acceleration by the object mass of 10 kg gives a constant acting force of 25 N.
From Fig. 6.40, the product of mass and acceleration at each plotted point equals a constant force of 10 N. The force-mass graph is a horizontal straight line parallel to the mass axis at 10 N.
Option (iv) is correct because according to Newton’s third law of motion, whenever two objects interact during a collision, they exert equal and opposite forces on each other regardless of differences in their masses.