An object whose mass is 100 lb falls freely under the influence of gravity from an initial elevation of 600 ft above the surface of earth. the initial velocity is downward with a magnitude of50 ft/s. the effect of air resistance is negligible. determine the velocity, in ft/s, of the object just before it strikes earth. assumeg= 31.5 ft/s2

Initial speed of drop is given by

total displacement of the object from top

acceleration due to gravity

so the final speed is given by kinematics equation

so if will hit the surface at speed 200.7 ft/s

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min