Question

A cannon launches a 3.0 kg pumpkin with 110J of kinetic energy. what is the pumpkin’s speed?

Answer 1

v = 8.56 [m/s]

Step-by-step explanation:

The kinetic energy can be calculated by means of the following equation.

`E_(k)=(1)/(2)*m*v^(2)`

where:

m = mass = 3 [kg]

v = velocity [m/s]

Ek = kinetic energy [J]

`110 = (1)/(2) *3*(v^(2) )\\v^(2) = 220/3\\v=√(73.333)\\v=8.56[m/s]`