The mathematical definition of work (W) is force (F) multiplied by distance (x). In order to determine the distance for fixed force and work the above equation needs to be rearranged to make x the subject. The work divided by the force is equal to the distance. In this case the mother can push the baby carriage by a distance equal to 2920 divided by 62, which is 47.1 metres.

5 0

4 years ago

An auto race takes place on a circular track. A car completes one lap in a time of 18.0 s, with an average tangential speed of 4

eduard

Answer:

(A) 0.3488 rad/sec

(B) 124.246 m

Explanation:

We have given car completes one revolution in 18 sec'

So time period T= 18 sec

Tangential speed v = 43.4 m/sec

(A) Angular velocity is given by $\omega =\frac{2\pi }{T}=\frac{2\times 3.14}{18}=0.3488rad/sec$

(B) Tangential velocity is given v = 43.4 m /sec

We know that $v=\omega r$

$r=\frac{v}{\omega }=\frac{43.4}{0.3488}=124.426m$

4 0

3 years ago

Convex mirror is used as a rear view mirror in vehicles why give reasons<br>

KiRa [710]

Answer: We prefer a convex mirror as a rear-view mirror in vehicles because it gives a wider field of view, which allows the driver to see most of the traffic behind him. Convex mirrors always form a virtual, erect, and diminished image of the objects placed in front of it.

8 0

3 years ago

What are Norton's formulas?​

What are Norton's formulas?