Answer:
10 km/hr/s
Explanation:
The acceleration of an object is given by

where
v is the final velocity
u is the initial velocity
t is the time
For the car in this problem:
u = 0

t = 6 s
Substituting in the equation,

<span>Work: W = Fd. 50(distance) multiplied by 90(force) would equal 4500 J or, answer D</span>