Answer:
<em>The acceleration of the racecar is</em> 
Explanation:
<u>Uniformly Accelerated Motion</u>
It's a type of motion in which the velocity of an object changes by an equal amount in every equal period of time.
Following the definition above, the acceleration is defined as:

Where a is the constant acceleration, vo the initial speed, vf the final speed, and t the time.
The racecar goes from vo=18.5 m/s to vf=46.1 m/s in t=2.47 seconds, thus the acceleration is:



The acceleration of the racecar is 
Answer:
M = 49.4kgm/s (towards the left)
Explanation:
Momentum is the product of mass and velocity of an object
Momentum = mass * velocity
Momentum of Object 1 with mass 1.66 kg moving to the right at 11.2 m/s, is expressed as:
M1 = 1.66 * 11.2
M1 = 18.592kgm/s
Momentum of Object 2 with mass 6.59 kg moving to the left at 10.4 m/s is expressed as:
M2 = 6.59 * -10.4
M2 = -68.536kgm/s (negative since it is moving towards the left)
The total momentum will be the sum of momentum along the x-component as shown:
M = M1+M2
M = 18.592kgm/s--68.536kgm/s
M = -49.944kgm/s
M = 49.4kgm/s (towards the left)
The force of gravity is causing him to accelerate downwards, and the force of friction pulls him back. There’s also a normal force keeping him on the slide.
I believe the answer is Nonmaterial Culture.