Answer:4.39 s
Explanation:
Given
initial velocity 
acceleration 
velocity acquired by sled in
time


distance traveled by sled in 



distance traveled in
time with velocity 




----1


substitute the value of
in 1
we get

thus 

Answer:

Explanation:
A differential equation that contain a term with di(t)/dt is in a RL circuit. Here we have

where vr is the voltage in the resistance, vi is the voltage in the inductance and vb is the source voltage. But also we have that

where L is the inductance of the circuit, r is the resistance an i is the current. By replacing we have the differential equation

I hope this is useful for you
regards
The youngest age that this person can be and legally operate a boat powered by a motor of more than 35 hp will be 12 years of age.
<h3 /><h3>What is electric power?</h3>
It is the rate of the electric work done. Its unit is the watt. Horsepower is the unit of power.
A person under the age of 12 may only legally operate a boat with a motor that has more than 6 horsepower but no more than 35 horsepower
if they meet two requirements: they have a boating safety certificate, which they must have on board; and they are being closely watched by an adult who is at least 16 years old.
Hence the youngest age that this person can be and legally operate a boat powered by a motor of more than 35 hp will be 12 years of age.
To learn more about electric power refer to the link;
brainly.com/question/12316834?referrer=searchResults
#SPJ1
Answer:

Explanation:
Speed is equal to distance over time.

The distance is 400 meters and the time is 50 seconds.

Substitute the values into the formula.

Divide.

The speed of the car is 8 meters per second.