A<span>. speed= distance/ time

s= 4</span><span>.6m/s

d=60m

4</span><span>.6= 60/t

</span>4.6t= 60

**t= 13****.04 seconds**

b. acceleration= (the change in velocity/speed)/(time) this is the same as a=Δv/t<span>

a= unkown

</span>Δv= (final speed - initial speed) = 3.1m/s - 4.6m/s= **-1.5m/s**

t=3 seconds

**a=**Δv/t= -1.5/3=** -0.5m/s²**

answer: the soccer player decelerated by 0.**5m/s**². This means his speed is decreasing by 0.5m/s². We know it is decreasing because the answer is negative.

c. list given information:

final velocity/speed(FS)= 0m/s

initial velocity/speed(IS)= 4m/s

distance(d)= 2m

time(t)= UNKOWN

acceleration(a)= UNKOWN

(side note: velocity and speed are almost the same thing. The difference between the two words is that velocity usually has a direction and can be negative. Speed cannot be negative. If your problems use the word "speed" I would recommend you continue to use the word "speed" as well. I wanted to clarify this so that you didn't think I was saying to divide velocity by speed.)

Equation: (final speed²)= (inital speed²)+ 2(distance)(acceleration)

FS²=IS²+2da

(0²)= (4²)+ 2(2)a

0=16+4a

-4a=16

**a= -4m/s²**

answer: The deceleration(decreasing acceleration) is 4m/s². This is because the speed was changing at a rate of negative 4 meters per second squared until reaching a final speed of 0m/s.

d. List given information:

Initial speed: 0m/s (we know he started from "rest" which means his IS was 0)

Final speed: UNKNOWN

time= 1.5seconds

distance= UNKOWN

acceleration= 3.1m/s²

Equation: distance= (initial speed * t) + ((1/2)*(acceleration)*(time²)

d= (IS)t + (1/2)at²

d= (0)(1.5)+ (1/2)(3.1)(1.5²)

d= 0 + 3.4785

**d≈3.5 meters**

Any confusion or questions? Hope this helped!

**The average force is -212.4 N**

**Explanation:**

We can solve this problem by using the impulse theorem, which states that the impulse exerted on the object (the product of the force exerted and the time) is equal to the change in momentum of the object:

where

F is the net force on the object

is the time

m is the mass

is the change in velocity

In this problem, we have:

m = 26.3 kg

Solving for F, we find

where the negative sign indicates that the direction of the force is opposite to the motion of the object.

Learn more about **force and momentum:**

brainly.com/question/9484203

#LearnwithBrainly

Answer is option b The amplitude of the resultant wave is greater than the amplitude of either of the two individual waves.

Well Hmm how much you tell me it’s your work lol

The box weights more and has more mass than the worker pushing it.:) hope that helped:)