Question

Formulae:
E_k=1/2 mv^2
E_gp=mgh
Reminder: the unit of energy in the SI is Joules, and the symbol is J
A bow can shoot a 42 g arrow at 16.5 m s-1. What is the kinetic energy of the arrow?

Answer 1

Answer:

0.3465J

Explanation:

Given,

Mass = 42g = 0.042Kg

Velocity = 16.5m/s

We know Kinetic energy = 1/5mv

Ek= 1/5*0.042*16.5

Ek = 0.3465J

I hope it's helpful to you