Question

A 9.50 g bullet has a speed of 1.30 km/s

Part A
What is the kinetic energy of the bullet?

Answer 1

8027.5 J

Step-by-step explanation:

We can calculate the kinetic energy of an object using the formula,

`\implies E =(1)/(2)mv^2 \\`

where ,

• m is the mass
• v is velocity

Here,

`\implies v = 1.3\ km/s\\`

`\implies v = 1300 \ m/s \\`

And mass ,

`\implies m = 9.50g \\`

`\implies m = 9.5 * 10^(-3) \ kg \\`

Simply plug in the respective values,

`\implies E = (1)/(2)* 9.50* 10^(-3)* (1300\ m/s)^2 \\`

`\implies \underline{\underline{E = 8027.5\ Joules }} \\`

and we are done!