A car is moving with the a speed of 25m/s. Calculate the distance travelled the car in 30seconds​

Explanation:

We are asked to find the distance a car traveled. Distance is the product of speed and time.

The speed of the car is 25 meters per second. The time is 30 seconds.

The units of seconds cancel each other out.

The car traveled 750 meters in 30 seconds at a speed of 25 meters per second.

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.

a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.