A2000-lb car drives from denver (altitude: 5280 feet) to los angeles (sea level). what is its change in potential energy, in btu? g = 32.174 ft/s² provide your answer rounded to one decimal place, and make sure to include units. *
2) the velocity of an object increases by 50% (v₂=1.5 v₁). by what factor does the kinetic energy increase? *
1
4
1.5
2.25

Ablock of mass m slides on a horizontal frictionless table with an initial speed v0 . it then compresses a spring of force constant k and is brought to rest. the acceleration of gravity is 9.8 m/s2. how much is the spring compressed x from its natural length? 1) x = v0*sqrt(k/(mg)) 2) x=v0*sqrt(m/k) 3) x=v0*((mk)/g) 4) x=v0*sqrt(k/m) 5) x=v0*(m/kg) 6) x=v0*sqrt((mg)/k) 7) x=(v0)^2/(2g) 8) x=v0*(k/(mg)) 9) x=(v0)^2/(2m) 10) x=v0*((mg)/k)