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3 years ago

A 60.-kilogram physics student would weigh 1560

Physics

1 answer:

rosijanka [135]3 years ago

4 0

Answer:

26m/s²

Explanation:

Given parameters:

Mass of the student = 60kg

Weight = 1560N

Unknown:

Acceleration due to gravity = ?

Solution:

Weight is a force on a body due to gravity;

Weight = mass x gravity

Insert the given parameters and solve;

1560 = 60 x gravity

Gravity = $\frac{1560}{60}$ = 26m/s²

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AnnZ [28]

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4 years ago

The maximum speed around a level curve is 30.0 km/h. What is the maximum speed around a curve with twice the radius?

erastovalidia [21]

Answer:

When the radius is doubled, its speed will be 42.42 km/h.

Explanation:

Given that,

The maximum speed around a level curve is 30 km/h = 8.34 m/s

We need to find the maximum speed around a curve with twice the radius. The maximum speed of the object is given by :

$v=\sqrt{\mu rg}$ ............(1)

If radius is doubled, r' = 2r

The maximum speed is given by :

$v'=\sqrt{\mu r'g}$

$v'=\sqrt{\mu (2r)g}$ ..........(2)

Dividing equation (1) and (2) we get :

$\dfrac{v}{v'}=\dfrac{1}{\sqrt2}$

$v'=\sqrt{2} v$

$v'=\sqrt{2}\times 30$

v' = 42.42 km/h

So, when the radius is doubled, its speed will be 42.42 km/h. Hence, this is the required solution.

6 0

4 years ago

Read 2 more answers

The coordinates of a bird flying in the xy-plane are given by x(t)=αt and y(t)=3.0m−βt2, where α=2.4m/s and β=1.2m/s2.part a:Cal

8090 [49]

Α $=2.4 \frac{m}{s}$

β $=1.2 \frac{m}{s^2}$

$x(t)=at$

$y(t)=3-$ β $t^2$

$Vx(t)=$ α

$Vy(t)=-2$ β $t$

$vectorV=[$ α $;-2$ β $t]$

$ax(t)=0$

$ay(t)=-2$ β $t$

$vector a [0;-2$ β $t]$

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4 years ago

A positive charge is moving across a room from south to north. A magnetic field runs from east to west. In what direction is the

sp2606 [1]

Answer:

the force is on the z axis, coming out of the blade

Explanation:

The direction of the magnetic force is given by the right hand rule,

For a positive charge, the thumb points in the direction of velocity, the other fingers extended in the direction of the magnetic field, and the palm points in the direction of force.

In this case.

Thumb points North

The fingers extended is in the east - west direction parallel to the blade

The palm is sticking out of the leaf, in the z direction

the answer is the force is on the z axis, coming out of the blade

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3 years ago

Prove that, s=u+v/2<br>please I need help

Hoochie [10]

Answer:

Actually the formulae is S=(u+v/2)t

.TO explain,from average velocity=distance /time

and average velocity is u+v/2

hence using the formular

Average velocity=distance/time

distance will be=average velocity ×time

so S=(u+v/2)t

5 0

3 years ago