Calculating Speed
How do you calculate speed? (What is the formula)
Speed = distance/ time
Does this graph show the object stopping?
Link: https://drive.google.com/file/d/1_JIsWxSX2Inz01ZUDEzcDVgF2QGepkCA/view?usp=sharing
Yes
What is Newton’s First law also known as?
Law of Inertia
What is velocity?
Velocity is the speed and direction of an object.
A car drives 60 miles. It takes them 2 hours to get there. What is the speed of the car in minutes?
0.5 miles per minute
What does the line going up on this graph represent?Clink link to view image:
https://drive.google.com/file/d/1_JIsWxSX2Inz01ZUDEzcDVgF2QGepkCA/view?usp=sharing
It represents the object is moving farther away from the starting point.
The tendency of an object to resist a change in its motion is called:
Inertia
What does a distance-time graph show?
It shows the relationship between the distance travelled and how much time it took to get there.
Jim is walking from school to a playground nearby. The playground is 25 units away. After 10 minutes, he finally arrives. What was his speed in units?
2.5 units per minute
Link:https://drive.google.com/file/d/1_JIsWxSX2Inz01ZUDEzcDVgF2QGepkCA/view?usp=sharing
The line in the graph is resting between 10:00 and 10:30. We can conclude that:
a) They are walking back home.
b) They are walking in a different direction.
c) They are pausing for a picnic.
d) They are chasing a dog.
C; They are pausing for a picnic.
Newton's First Law states that an ___________ ____ must be present to make an object move or stop an object's motion.
Unbalanced Force
What does is mean when an object is stationary?
The object is not in motion or at rest.
Tilly sprints 250 meters in 30 minutes. What is her speed in meters per minute?
8.3 meters/ minute
What does a curve line on a distance-time graph mean?
It means that the object speed isn't constant, it's accelerating.
Without an unbalanced force, a moving object will not only keep moving, but its ______________________________ will also remain the same.
Velocity (Speed & Direction)
_______________ is a force that counters all kinds of motion. It occurs whenever two surfaces come into contact.
Friction
A person is running in a 10k (6.2 miles) marathon. They run at 5 miles per every 30 minutes. How long does it take them to run? Bonus for 50 additional points: what is their speed in hours?
62 minutes & 10 mi per hour
What are s possible scenario for this graph?
Link: https://drive.google.com/file/d/1_JIsWxSX2Inz01ZUDEzcDVgF2QGepkCA/view?usp=sharing
Answers may vary. Ex: A person was hiking at a constant speed and took a break. After the break, they continued moving at the same rate as earlier.
What is Newton's First Law?
It describes that an object at rest remains at rest, or if in motion, remains in motion at a constant velocity unless acted on by a net external force.
If a car moves with an average speed of 60 km/hr. How far will it travel if it continues this average rate for 4 hrs?
240 km