một người kéo một cái hòm nặng 20kg chuyển động trên mặt sàn nằm ngang với lực kéo Fk=10N, lực có phương song song với mặt sàn. Công của vật kéo khi vật đi đc quãng đường 5m là:

answer: a) y=-8x+5

a) m= -8

b) m= -2

c) m= 7

d) m= 6

d eras and periods

r = ρ x length / area  

ρ = r x area / length  

ρ is in ohm-meters  

in basic units, it is m³kg/s³a²  

i think this is it.

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