5. a 1-kg car and a 2-kg car are both released from the top of the same hill and roll down a frictionless track. at the bottom of the hill, which car will have the greater
speed? which car will have the greater kinetic energy?
o a the 1-kg car will have greater speed, and the 2-kg car will have greater kinetic energy
ob. the 2 kg car car will have greater speed, and the 7-kg car will have greater kinetic energy
oc. the cars will have equal speeds and equal kinetic energies.
od. the cars will have equal speeds and the 2 kg car will have greater kinetic energy

An alligator swims to the left with a constant velocity of 5 \,\dfrac{\text{m}}{\text s}5 s m ? 5, space, start fraction, m, divided by, s, end fraction. when the alligator sees a bird straight ahead, the alligator speeds up with a constant acceleration of 3 \,\dfrac{\text {m}}{\text s^2}3 s 2 m ? 3, space, start fraction, m, divided by, s, start superscript, 2, end superscript, end fraction leftward until it reaches a final velocity of 35 \,\dfrac{\text {m}}{\text s}35 s m ? 35, space, start fraction, m, divided by, s, end fraction leftward. how many seconds does it take the alligator to speed up from 5 \,\dfrac{\text {m}}{\text s}5 s m ? 5, space, start fraction, m, divided by, s, end fraction to 35 \,\dfrac{\text {m}}{\text s}35 s m ? 35, space, start fraction, m, divided by, s, end fraction?