Derivation of three equations of motion

Q. Velocity of a particle is in negative direction with constant acceleration in positive direction. Then, match the following columns.

Column-I	Column-II
(a)	Velocity-time graph	(p)	Slope$\to$negative
(b)	Acceleration-time graph	(q)	Slope$\to$positive
(c)	Displacement-time graph	(r)	Slope$\to$zero
		(s)	$\left|Slope\right|\to$increasing
		(t)	$\left|Slope\right|\to$ decreasing
		(u)	$\left|Slope\right|\to$ constant

1. $(A\to q,u,B\to r,u,C\to p,t)$
2. $(A\to q,u,B\to r,u,C\to p,u)$
3. $(A\to q,u,B\to r,C\to p,t)$
4. $(A\to q,B\to r,u,C\to p,t)$

Q. Which of the following graphs gives the equation $x=v_{0}t+\frac{1}{2}a{t}^2$

1. 
2. 
3. 
4. None of these

Q.

A car is travelling with a constant speed of 5 m/s. suddenly superman comes and starts pushing from behind providing a constant acceleration of 5 m/$s^2$. Find the velocity of the car after 2 sec.

1. 10 m/s

2. 25 m/s

3. 15 m/s

4. 35 m/s