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VikaD [51]
4 years ago
15

Can someone explain 3 I don't understand

Physics
1 answer:
Daniel [21]4 years ago
5 0
PE=mgh
Gravitational potential energy is equal to mass(58.0g) times gravitational acceleration(9.81m/s^2) times heigh/distance from ground
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Use the drop-down menus to complete each statement.
Ivanshal [37]

Answer:

The amount of matter in an object is its  mass

An action that has the ability to change an object's state of motion is  a force

The rate at which velocity changes over time is acceleration

Explanation:

- Mass is a scalar quantity that gives a measure of the amount of matter contained in an object/substance. The SI unit of the mass is the kilogram (kg). Mass is an intrinsec property of an object, that means that it does not change when the object is moved in another location.

- A force is a vector quantity, that indicates an action exerted on an object that changes the state of motion of the object. It is measured in Newtons (N). According to Newton's second law, the acceleration of an object is equal to the net force exerted on the object divided by its mass:

a=\frac{F}{m}

- Acceleration is a vector quantity, which is equal to the ratio between the change in velocity of an object and the time interval taken for that change to occur. It is measured in meters per second squared (m/s^2). Mathematically, it is defined as

a=\frac{\Delta v}{\Delta t}

3 0
3 years ago
Read 2 more answers
Which best describes the body in terms of simple machines?
valkas [14]
Lever because if you can bend your elbows


4 0
4 years ago
You and your fellow students have been challenged to design a rubber band powered car. You will use the elastic potential energy
Tcecarenko [31]

Answer:

The correct answer is A

Explanation:

3 0
3 years ago
The mass of an object does not depend on its shape - it stays the same. Give an example that would prove this to be true.
lianna [129]

Answer:

it depends on the density.

an object can be small but way more.

Explanation:

8 0
3 years ago
You throw a small rock straight up from the edge of a highway bridge that crosses a river. The rock passes you on its way down,
IrinaK [193]

A dummy is fired vertically upward from a canon with a speed of 40 m/s. How long is the dummy in the air? What is the dummies maximum height?

v=u-at

0=40-10xt

t=4 secs


height = ut-1/2at^2

height= 40x4-1/2x10x4^2

height = 160-5x16

height=160-80=80m

8 0
3 years ago
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