<span>Brake </span>is not included in your
perception time.
<span>To add, the total stopping distance of a vehicle is made up
of 4 components. The human </span>perception time; is how long the driver<span> takes to see the hazard, and the brain realize
it is a hazard requiring an immediate reaction.</span>
Answer:Image will be located at 2F on the other side of the lens.
Explanation:
Answer:
300 N
Explanation:
We have three forces acting on the object:
- W = 1500 N, downward: the weight of the object
- F1 = 1200 N, upward: the force exerted by the first man
- F2, upward: the force exerted by the friend
In order to lift the object, the sum of the two forces F1 and F2 must be at least equal to the weight of the object W. Therefore we can write
And from this equation, we can find the magnitude of F2: