1. A 12 kg dog is running 5 m/s. How much kinetic energy does the dog have? 2. Another dog is also running at 5 m/s, but this one has 100 Joules of kinetic energy. What is this dog's mass?

1. 150j

2. 8kg

Explanation:

1, KE = 1/2mv^2

= 1/2(12)×(5)^2

= 6 × 25

KE = 150j

2, KE= 1/2mv^2

100j = 1/2m× (5m/s)^2

2(100j) = m × 25

m = 200/25

m = 8kg

i hope it helps

ill do it for 100, also this isnt 80 its 40

the displacement produced by the body.  

the amount of force subjected to the body.  

the angle between the direction of force and displacement