Question

A Caris travelling along astraigh levels red at 20 m/s against force of 3000M What Power forms its engine is needed?​

Answer 1

600kW

Step-by-step explanation:

Power= Workdone/ time

= 1500/8*320

= 1500*40

= 60000J/s

= 600kW

Workdone= Fd

= 3000*1*1/16

= 1500/8

= 750/4

= 137. 5Nm

3000F/320

=150F/16

s=ut+1/2at^2

3000= 1/2at^2

6000= at^2

6000/a=t^2

F=ma

20m/t=ma

20/t= a

20m=Ft

20m=F(320)

m= 8F

F=ma

= 20/tm

20m/t= 20/tm

m= 1/m

m=1kg

6000/a= 400/a^2

16= 1/a

a= 1/16ms-2

t= 20/1/16

t= 320 s

(v-u)/t=a

v= 20ms-1