Hurry and answer i need the answer by 11pm

the smith family is travelling in their car at 50 km/h due east. mr. smith is using cruise control to maintain a constant speed. describe the net force acting on the smith car.

a) net force equals zero.
b) net forces are unbalanced.
c) net force is positive and to the east. my choice. is this the correct one?
d) there is no way to determine net force.

The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.

You are given two vectors a⃗ =−3.00ι^ 5.00j^ and b⃗ =5.00ι^ 2.00j^. let the counterclockwise angles be positive.

If the textbook weighs 19.6 newtons on venus,what is the strength of gravity on venus?