A Velcro ball is thrown at a stationary target and sticks. If the ball weighs 1kg and the target weighs 5kg, and the final velocity of the combined mass is 2m/s, how fast was the ball thrown?

prndulum needs thread, weight clock to time swings

electrical potential energy =0.072 j

explanation:

electrical potential energy is given by

u= q δv

q= charge=6 c

δv= potential difference and is given by

δv= e d

e= electric field

d= distance=5 mm=0.005 m

δv=2.4 (0.005)=0.012 v

now electric potential energy= u= q δv

u=6 (0.012)

u=0.072 j

a. carbon monoxide from car exhaust

b.particulate matter, such as soot

c.water vapor from a factory smokestack

d.acid rain

these are the answer choices im on that question right now