The forces acting on the man are ______________ because there is __________, which makes a net force of ________.
unbalanced, no motion, 0N
balanced, motion, an indeterminable amount
unbalanced, motion, an indeterminable amount
balanced, no motion, 0N
Which of the following scenarios gives an example of velocity?
The train went at a speed of 100mph.
The hawk flew towards its prey at a speed of 10 miles per hour.
The quarterback threw the football 50mph to the right so that the receiver could catch it.
The bird flew north.
What is the equation for speed?
speed = mass x acceleration
speed = time/distance
speed = distance / time
speed = distance x time
Tony is a cyclist and likes to bike through the city of Columbus. He's waiting at a red light before he can move again. Tony is passed by his friend, Jonesy, who does not stop at the red light. Which is the best reference point for Tony to use to determine if something is in motion?
The SUV that is next to Tony at the red light.
His friend Jonesy, that did not stop at the red light.
A motorcyclist that is turning left at the green light.
The Capitol building at the corner.
What is the net force in this scenario?
450N to the left
450N to the right
0N to the right
900N to the right
Which of the following is NOT an example of fluid friction?
A penguin sliding on its belly on ice.
A kite soaring through the air.
A dog's jowls flapping in the air when its head is placed out the window of a moving car.
A shark swimming through the water.
What is the net force in this scenario?
Choose the statement below that is NOT true about the forces in this scenario.
The net force is 0N.
The net force is 10N.
There is no motion.
The forces are balanced.
The Great Pyramids: The ancient Egyptians built pyramids out of large blocks of limestone. No one knows for sure how they managed to move the blocks across land.One idea about how the Egyptians moved the stone blocks without modern machines is a simple one. As seen in the image below, the stone was pulled forward, the logs in back were picked up and placed in front of the block again. Which statement below best describes how the ancient Egyptians were able to move the blocks of limestone?
They used fluid friction to their advantage by placing logs under the limestone blocks.
The force needed to overcome rolling friction is much less than the force needed to overcome sliding friction.
The amount of gravity pulling on the blocks decreased as they were raised off of the ground by the logs.
They increased the number of people until they were able to provide a large enough force to overcome the static friction.
Which arrow best represents the direction of friction in this penguin moving to the left scenario?
up
right
down
left
Gravity works at a distance to _______ things together.
Distance and __________ are the 2 factors that determine the amount of gravity on two objects.
friction
weight
mass
velocity
What is Newton's 1st Law of Motion? Describe, in terms of Newton's 1st Law, what would happen if you are on a skateboard and hit a curb with your front wheels.
A lamp is sitting on a desk. Which of the following is true about the desk?
It is pushing up on the lamp.
It can affect the velocity of the book.
It is pulling down on the lamp.
It exerts no force on the lamp at all.
Ball A and Ball B are rolled so that they will collide. Does the data in the data table below demonstrate the law of conservation of momentum? Explain your reasoning.
Thank you!
The forces acting on the man are unbalanced because there is no motion, which makes a net force of 0N. (Answer: balanced, no motion, 0N)
The train going at a speed of 100mph is an example of velocity. (Answer: The train went at a speed of 100mph.)
The equation for speed is speed = distance / time. (Answer: speed = distance / time)
The best reference point for Tony to use to determine if something is in motion is his friend Jonesy, who did not stop at the red light. (Answer: His friend Jonesy, that did not stop at the red light.)
The net force in this scenario is 0N to the right. (Answer: 0N to the right)
A kite soaring through the air is not an example of fluid friction. (Answer: A kite soaring through the air.)
The statement below that is NOT true about the forces in this scenario is "The net force is 10N." (Answer: The net force is 10N.)
The ancient Egyptians were able to move the blocks of limestone by using fluid friction to their advantage by placing logs under the limestone blocks. (Answer: They used fluid friction to their advantage by placing logs under the limestone blocks.)
The arrow that best represents the direction of friction in the penguin moving to the left scenario is left. (Answer: left)
Gravity works at a distance to pull things together. (Answer: pull things together)
Distance and mass are the 2 factors that determine the amount of gravity on two objects. (Answer: mass)
Newton's 1st Law of Motion states that an object at rest tends to stay at rest and an object in motion tends to stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force. If you hit a curb with your front wheels while on a skateboard, according to Newton's 1st Law, you would tend to keep moving forward and might be thrown off the skateboard. (Answer: According to Newton's 1st Law, you would tend to keep moving forward and might be thrown off the skateboard.)
The desk is pushing up on the lamp. (Answer: It is pushing up on the lamp.)
To determine whether the data in the data table demonstrates the law of conservation of momentum, we need to compare the total momentum before the collision to the total momentum after the collision. If the total momentum before and after the collision is the same, then it demonstrates the law of conservation of momentum. Please provide the data table for further analysis. (No given data table)
You're welcome! If you have any more questions, feel free to ask.
D
B
C
D
D
A
B
B
B
hold
C
?
D
?