Question

a 610 kg racehorse is able to accelerate from rest to a speed of 14 m/s in only 1.1 s

a) Assume tat the acceleration of the racehorse is constant. what is the distance required by the horse to reach this speed?

b) What is the minimum amount of energy required by the horse to reach this speed?

c) how much power does the horse have during acceleration?

Answer 1

What have you got so far?

Answer 2

i got the 1st question.... which is 7.7 metres

Answer 3

That's correct.

So ahm.. what's your problem with the second question? Are you jsut stuck or don't you know where to start.. how did you figure out a anywho... talk to us ^_^

Answer 4

i have no idea how to do qstn 2.... i found out 1 by one of the big five equations

Answer 5

ahm.. what the hell are the big five equations supposed to be? o.O

anywhoo.. do you know how work is defined?

Answer 6

nevermind, found b)

its basically.. total kinetic energy equals net work..

Answer 7

I'm happy, you figured it out but seriously: you are not telling us (or me for that matter) anything about how you did it or where you were stuck.. nothing.. how are we supposed to help you anyways?

Answer 8

ok si iwas stuck in qstn 2... din knw what to do .... so i took just calculated total kinetic energy which is equal to total work because there is no gravitational potential energy

Answer 9

and then finding c) is easy because power = work/time

Answer 10

Is that supposed to be english? xD

But yeah.. congratulations - glad you figured it out! Good job :)