A cop claims you passed him at more than 60mph (27.8m/s), 200 meters from a red light that changed green. You drive a 1970 VW beetle convertible that accelerates at a maximum of 1.5 m/s2. When you go before the traffic court, do you beat the ticket? Please show how you did it :)

Explanation:

Given:

Δx = 200 m

v₀ = 0 m/s

a = 1.5 m/s²

Find: v

v² = v₀² + 2aΔx

v² = (0 m/s)² + 2 (1.5 m/s²) (200 m)

v = 24.5 m/s

At your maximum acceleration, the top speed you could have reached is 24.5 m/s, which is less than 27.8 m/s.

the answer is 12 as i may remember

: )

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