Un pájaro de masa 300 g vuela a una altura de 200 metros a una velocidad de 20 m/s , el pájaro desciende 50 metros y aumenta su velocidad a 25 m/s . Calcular la energía mecánica inicial y final del pájaro y su variación de energía mecánica

explanation:

newton's third law, for every action there is an equal and opposite reaction.

c) up

hope this

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

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.