2. A certain type of rocket sled is used to measure the effects of sudden extreme deceleration. The sled reaches a top speed of 320 km/h and then comes to a complete stop in 0.18 s. What is the acceleration that takes place in this time? Given:

multiply 2kg by latent heat of vap

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