Given parameters:
Acceleration of the car = 1.6m/s
Initial speed = 80km/hr
Final speed = 110km/hr
Solution:
Time taken to achieve this speed = ?
Solution:
Acceleration is the rate of change of velocity with the time taken.
Mathematically;
a = 
where a is the acceleration
V is the final velocity
U is the initial velocity
T is the time taken
Now make the unknown time the subject of the expression;
aT = V - U
T =
Convert the given acceleration to km/hr;
1.6m/s = 1.6 x
x
x
= 5.76km/hr
Input the parameters and solve;
T =
= 5.2hrs
The time taken is 5.2hrs
Answer:
option c
Explanation:
Kinetic energy is due to the speed of a body.

When speed is doubled, the kinetic energy is quadruple.
From third equation of motion, braking distance is also proportional to square of speed. Thus, when speed is doubled, the braking distance is quadruple.
Thus, option c is correct.
Answer:

Explanation:
Recall that the formula for an inductance (L) for coil on N turns, are A and current I is given by:

Then, for the first coil we have;

and for coil 2 we have:

then, the quotient L1/L2 can be written as:

<h2>
Answer:</h2><h2>
It is due to a refractment of light.</h2>
Sound moves faster in warmer air than colder air the way bends away from the warm air and back towards of air.