Question

sa Ans. In e body ADS. -12 player. 11. A force acts for 0.1 s on a body of mass 24 of ms-1 re magnitude of force. g is 7s1 On Ans. 4 f s-2 13. a s2 C ed Ans. 724 St: 10. A cricket ball of mass 150 g moving at a spers eg 25 ms is brought to rest by a player 0-03 s. Find the average force applied by locity do initially at rest. The force is then withdrawn the body moves with a velocity of 2 ms. Find th 12. A body of mass 500 g, initially at rest, is acted fo kg. by a force which causes it to move a distano, 4 m in 2 s, Calculate the force applied. Ans. f ind is stopped by applying brakes in 10 s. Calculate t force applied by the brakes. of 14. A car is moving with a uniform velocity of 30 ms It is stopped in 2 s by applying a force of 1500 N through its brakes. Calculate : (a) the change momentum of car, (b) the retardation produced у car, and (c) the mass of the car. Ans. (a) 3000 kg m s' (b) 15 m s- (C) 1001 15. A bullet of mass 50 g moving with an initial veloci of 100 m s-1, strikes a wooden block and comes rest after penetrating a distance 2 cm in Calculate : (i) initial momentum of the bulle (ii) final momentum of the bullet, (iii) retardatic caused by the wooden block, and (iv) resistive forc exerted by the wooden block Ans. (i) 5 kg m sł, (ii) zero (iii) 25 105 m s2, (iv) 12500 N or ។​

Answer 1

Answer:

Nuclear fission is the process of splitting apart nuclei (usually large nuclei). When large nuclei, such as uranium-235, fissions, energy is released. So much energy is released that there is a measurable decrease in mass, from the mass-energy equivalence. This means that some of the mass is converted to energy.