Answer:
500 N
Explanation:
Given;
Mass of the car, M = 1000 kg
initial speed of the car, u = 0 m/s
Final speed of the car, v = 60 m/s
Time, t = 1 min = 60 s
Now,
Force, F is given as:
F = Ma
where,
a is the acceleration
From the Newton's equation of motion, we have
v = u + at
on substituting the values, we get
60 = 0 + a × 60
or
a = 1 m/s²
Thus,
Force = 1000 × 1 = 1000 N
now,
this force will be equal to the friction force provided by the rear wheels
let the friction force on a single rear wheel be 'f'
thus,
2f = 1000 N
or
f = 500 N
Answer:
Seen
Explanation:
The correct answer to the given question is Seen
The complete sentence is:
Watch for signals that your vehicle is actually seen by other drivers.
This is the correct answer and completes the sentence given in the question.
The blank area is to be filled with the word Seen which will complete the sentence.
Answer:
∆S=Q/T
Explanation:
Given the general expression for entropy:
We can proceed to find the final expression.
As the temperature does not change, it can be removed from the integral, leaving:
Now, we proceed to solve the integral to have the final answer: