Question

@Abhisar
A model rocket with a mass of 0.181 kg is launched into the air with an initial speed of 92 m/s. How much kinetic energy will the rocket have at a height of 164 m? Assume there is no wind resistance.

303 J
634 J
444 J
747 J

Answer 1

@Abhisar wasn't the Last question nuclear energy

Answer 2

First use V^2=U^2+2as to find the final velocity. Then use 1/2mv^2 to find the kinetic energy.

Answer 3

Yes, answer to last question was nuclear energy.

Answer 4

thanks a is gravity right

Answer 5

a=9.8

Answer 6

I got 1057

Answer 7

But that's not an option

Answer 8

What is the value of velocity u have got ?

Answer 9

108.1

Answer 10

v^2=(92)^2 - 2*9.8*164
-->v^2=8464-3214.4
-->v^2=5249.6

Answer 11

I think the answer should be 3rd option !

Answer 12

K I used that and got 475j not 444

Answer 13

yes !

Answer 14

Maybe the computer screwed up the question thanks

Answer 15

\(\color{red}{\huge\bigstar}\huge\text{You're Most Welcome! }\color{red}\bigstar\)
\(~~~~~~~~~~~~~~~~~~~~~~~~~~~\color{green}{\huge\ddot\smile}\color{blue}{\huge\ddot\smile}\color{pink}{\huge\ddot\smile}\color{red}{\huge\ddot\smile}\color{yellow}{\huge\ddot\smile}\)

Answer 16

u sure u r not missing any fact from the question ?

Answer 17

No I checked