If the vehicle starts to move from standstill with an acceleration of 2m / S ^ 2, the speed of the vehicle at the end of the fifth second is____ M / s, the average speed of the car in the fifth second is____ M / s, what is the displacement of the car in the fifth second___ m

If the vehicle starts to move from standstill with an acceleration of 2m / S ^ 2, the speed of the vehicle at the end of the fifth second is____ M / s, the average speed of the car in the fifth second is____ M / s, what is the displacement of the car in the fifth second___ m

If the vehicle starts to move from standstill with an acceleration of 2m / S ^ 2, the speed of the vehicle at the end of the fifth second is_ 10___ M / s, the average speed of the car in the fifth second is__ 9__ M / s, what is the displacement of the car in the fifth second_ 9__ m