science

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DYNAMICS

por Chow Pei Xuan

PROJECTILE MOTION

por S D

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Year 7 Science By Adam. H

por Nelson Mandella

Final Answer

We can predict the movement of an object in one dimension by doing experiments and learning about motion

How can we predict the movement of an object in one dimension?

Why do two objects released at the same time and height hit the ground at the same time?

Connection- When we watched the video of a feather and a bowling ball and they hit the ground at the same time

Two objects released at the same time and height hit the ground at the same time because they have constant acceleration

When an object is thrown up is has positive velocity, then the object slows down and it reaches a momentary stopping point. Then, it has negative velocity and negative acceleration. Finally, the object speeds up

At the peak the velocity is zero

Acceleration of gravity is always -9.8 m/s2

What is the relationship between velocity and acceleration?

Acceleration- change in velocity

Velocity- speed in a given direction

Connection- A connection is when hen we did the position vs. time graphs

You need velocity to have acceleration

Position vs. time graphs can be used to find speed and compare speeds

When graphing data, position should be on the y-axis and time should be on the x-axis

Acceleration occurs when there’s an increase in speed, a decrease in speed, or a change in direction

What is the relationship between displacement and motion?

Vocab

Speed- a measure of distance traveled over a period of time

Displacement- the length of a straight line from an object’s initial position to its final position

Initial reference- the starting point of an object that has experienced motion

Connection-I can connect to this when I am walking and I forget something and have to go back to get it

You need to have displacement to have motion

The formula for speed is Speed=distance/time

The formula for displacement is △x=xf-xi

One dimensional motion takes place in one direction

An object is in motion if it changes position in relation to a certain place