Question

A duck with a mass of 0.90 kilograms flies at a rate of 12.0 m/s. What is the kinetic energy of the duck? 130 J 5.4 J 65 J 11 J

Answer 1

the answer is j 5.4 the second one

Answer 2

Answer: 65 J

Step-by-step explanation:

Kinetic energy is the energy possessed by an object by virtue of its motion.

`K.E.=(1)/(2)m* v^2`

K.E= Kinetic energy = ?

m= mass of duck = 0.90 kg

v= velocity of duck=
`12ms^(-1)`

Putting in the values we get

`K.E=(1)/(2)* 0.90kg* (12ms^(-1))^2`

`K.E=65kgm^2s^(-2)=65Joules`

`(1kgm^2s^(-2)=1Joule)`

Thus kinetic energy of the duck is 65 Joules.