At what speed would a car have to move in order to travel 20 kilometers in two hours?

Speed of car required to travel 20 kilometers in two hours is 10 km/hr.

Explanation:

We have equation of motion s = ut + 0.5 at²

Initial velocity, u = ?

Acceleration, a = 0 km/hr²

Time, t = 2 hours

Displacement, s = 20 km

Substituting

s = ut + 0.5 at²

20 = u x 2 + 0.5 x 0 x 2²

2 u = 20

u = 10 km/hr

Speed of car required to travel 20 kilometers in two hours is 10 km/hr.