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AP Physics Chapter 3

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Section 1

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What's centripetal acceleration?

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Mar 1, 2020

Cards (22)

Section 1

(22 cards)

What's centripetal acceleration?

Front

Center seeking acceleration which occurs with circular motion

Back

List the force(s) acting on a projectile.

Front

Gravity, and gravity, and gravity ..... so only gravity

Back

crosswind

Front

A cross wind affects its path by making it angular and can be calculated using the Pythagorean Theorem (relative to the ground).

Back

For a projectile, the vertical motion is due to what?

Front

The acceleration due to gravity which is -9.8 m/s/s here on planet Earth.

Back

headwind

Front

It decreases the velocity of the plane relative to the ground.

Back

What direction do acceleration vectors point for an object with circular motion? (be able to show using vector subtraction)

Front

It is always pointed towards the center of your circular path.

Back

What is relative motion?

Front

Relative motion as to do with where motion is dependent on your point of reference.

Back

What are component vectors?

Front

Component vectors are the horizontal and vertical parts that make up a vector. They are perpendicular to one another, creating a right angle, and allow us to use the Pythagorean Theorem to solve for the resultant vector.

Back

T/F: Horizontal and vertical motion act independent of one another but both contribute to the overall trajectory of the projectile.

Front

True

Back

Name all the different ways an object can accelerate.

Front

1) Change the magnitude (increase or decrease) 2) Change the direction

Back

For a projectile, the horizontal motion is due to what?

Front

The initial source of motion (for example the athlete who threw the ball, the gun that shot the bullet).

Back

How are the x and y axis changed when analyzing motion on a ramp?

Front

The x axis is tilted so that it lines up with (parallel with) the curve of the ramp. The y axis is drawn so that it is perpendicular to the x axis; as usual.

Back

tailwind

Front

increases the velocity of the plane relative to the ground

Back

What is range in terms of projectile motion?

Front

The horizontal displacement

Back

What happens to the parent (original) vector if a negative sign is placed in front of it?

Front

It is flipped in the complete opposite direction. For example if it starts by pointing downward it will point upwards.

Back

What values remain constant with projectile motion?

Front

Initial vertical velocity is 0, vertical acceleration is -9.8 m/s/s, horizontal motion is constant, horizontal acceleration is zero.

Back

What does it mean for an object to have uniform circular motion? Does it have constant speed? Constant velocity?

Front

It means that it is traveling in a circular path with a constant speed. Speed is constant but velocity is not since the direction is constantly changing.

Back

What does the head of the arrow indicate? What does the tail indicate?

Front

The head of the arrow shows us the direction of the vector while the tail indicates the magnitude.

Back

What is a vector?

Front

An arrow showing both magnitude and direction

Back

What is a resultant vector?

Front

A resultant vector is used to show your net displacement/ velocity/ acceleration/ force

Back

a. 2A b. 1/2 A c. -4 A d. -1/10 A

Front

a. Twice as long as A, still pointed downwards b. Half as long as A, still pointed downwards c. Four times as long as A, pointed upwards d. Ten times smaller than A, pointed upwards

Back

What values or quantities can vectors be used to represent?

Front

Any vector quantities such as displacement, velocity, acceleration, and force.

Back