I know that
Throughout the day, we will notice the sun moving across the sky. What is the frame of reference in this scenario?
the sky
Which of the following best describes what displacement is?
SHortest distance in a strait line between two points.
How is velocity different from speed?
velocity also tells you the direction of travel of the object.
What ratio compares a time to a distance traveled?
Speed
What do the symbols vf and vi indicate in the acceleration equation
Vf- Final Velacity
Vi- Initial Velocity
What is the SI Unit for measuring distance
Meter
If a car is moving in uniform motion, what do we know about the car
it is moving at a constant velocity
What is the instantaneous speed of a car that travels from Harrisburg to Wilkes-Barre if the car has an average speed of 33mph
Without looking at the speedometer. We can not determine instantanious speed.
is a quantity that has both magnitude and direction
Vector
What was the average speed of Usain Bolt when he ran the 200 meter dash in 19.19 seconds
10.42 M/S
What is the total distance traveled divided by the time it takes to travel that distance
Average Speed/ Velocity
You are riding in a school bus and look out the window to see the trees zipping by. The trees let you know you are in motion and are therefore a _________________.
Vector
What do we call the rate at which velocity changes
acceleration
What is the calculated acceleration of an object in free fall due to gravity
9.8m/s2
What is the acceleration of an object that changes its velocity by 8m/s over a time of 5 seconds
1.6m/s2
What do we call the movement of an object toward the Earth when gravity is the only force acting on the object
Free Fall
Which of the following best describes how acceleration and velocity differ
velocity describes the speed of your vehicle throughout a distance traveled and acceleration describes your speed at a specific instance
Which of the following responses best describes this symbol: Δv
it describes the change in velocity of an object when calculating acceleration
What best describes what deceleration is
it is acceleration in a negative direction
How far has a bus traveled if it has been moving at an average speed of 45mph for 3.5 hours
157.5mph
What do we call it when an object falling toward the Earth reaches a maximum speed
Terminal Velocity
What kind of acceleration occurs when a car steadily increases its speed by 9m/s every second
Constant Acceleration
Why would it be beneficial for a zookeeper to know a lion’s velocity if it were to accidentally become released from its cage at the zoo
Because they would need to know the Direction in which the lion was traveling in. The Speed can calculate the distance but if they are traveling in the wrong direction they will never catch the lion.
What do we call the rate of acceleration of an object at a specific moment in time
instantaneous acceleration
In a vacuum, a golf ball and a piece of paper are dropped from the same height at the same time. Tell which reaches the ground first and explain why.
They both reach at the same time becuase there are no opositional forces to gravity. So Gravity will have a force of 9.8m/s2. This force will effect the objects the same no matter the mass or surface area.