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2 years ago

15

When jogging outside you accidently bump into a curb. Your feet stop but your body continues to move forward and you end up on t

he ground. Which law of motion is being described in this scenario?

1 answer:

oee [108]2 years ago

6 0

Inertia I think because I've heard it around school and in science

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What is kinematics ?? xD -,- xD

lorasvet [3.4K]

Answer:

Kinematics is a <em>subfield of physics, developed in classical mechanics, that describes the motion of points, bodies (objects), and systems of bodies (groups of objects) without considering the forces that cause them to move.</em>

Explanation:

Hope this helps!

Blazetoxic123

7 0

2 years ago

After a fall, a 90 kg rock climber finds himself dangling from the end of a rope that had been 16 m long and 7.8 mm in diameter

Nesterboy [21]

Explanation:

Given that,

Mass of the rock climber, m = 90 kg

Original length of the rock, L = 16 m

Diameter of the rope, d = 7.8 mm

Stretched length of the rope, $\Delta L=3.1\ cm$

(a) The change in length per unit original length is called strain. So,

$\text{strain}=\dfrac{\Delta L}{L}\\\\\text{strain}=\dfrac{3.1\times 10^{-2}}{16}\\\\\text{strain}=0.00193$

(b) The force acting per unit area is called stress.

$\text{stress}=\dfrac{mg}{A}\\\\\text{stress}=\dfrac{90\times 10}{\pi (3.9\times 10^{-3})^2}\\\\\text{stress}=1.88\times 10^7\ Pa$

(c) The ratio of stress to the strain is called Young's modulus. So,

$Y=\dfrac{\text{stress}}{\text{strain}}\\\\Y=\dfrac{1.88\times 10^7}{0.00193}\\\\Y=9.74\times 10^9\ N/m^2$

Hence, this is the required solution.

8 0

2 years ago

Please help me out !!

blagie [28]

I think the answer would be letter a

4 0

1 year ago

a man applies a force of 100n to a rock for 60 seconds but the rock does not move what is the amount of work done by the man on

Phoenix [80]

0 (zero) work done.

This is because work can be calculated by:

Work = Force × Distance

The force is 100 N and since the rock didn't move the distance is zero and so:

Work = 100 × 0 = 0 J

8 0

3 years ago

if the charge of each two particles is doubled and the seperation between them is also doubled. the force between the two partic

jok3333 [9.3K]

Explanation is in this link

https://doubtnut.app/physics-question/when-the-distance-between-two-charged-particles-is-doubled-the-force-between-them-becomes-422318076

4 0

2 years ago