Forces
Motion
Newton's Laws
Work & Power
Miscellaneous
100
What is a PUSH or PULL on an object?
Force
100
An object's speed in a particular direction is __.
What is VELOCITY?
100
A picture is hanging on a wall and does not move.
1st Law of Motion
100
How much work is being done with 200 N of force over 426 meters?
W = F x d
85,200 Joules
100
Name a surface with low friction
ice or something very smooth.
200
If these boys are each pulling with the force of 10 newtons. What will happen? AND Why?
The boy in blue will win.
They will not move at all.
The boy in red will win.
They will not move at all. Balanced force is being applied.
200
__________ is the change in speed or direction of an object's motion over time.
ACCELERATION
200
Pushing a child on a swing is easier than pushing an adult on the same swing.
2nd Law of Motion
200
True or False?
Work is done when a weightlifter holds a barbell still above his head.
False
The barbell is no longer moving.
200
A golf ball rolls down a hill on the golf course. Which statement best describes how friction affects the motion of the golf ball?
A. Friction causes the golf ball to roll forwards and backwards.
B. Friction decreases how far the ball rolls.
C. Friction increases how fast the ball rolls.
D. Friction causes the ball to bounce.
B. Friction decreases how far the ball rolls.
300
Which of the following statements is true?
a. Balanced forces cause a change in position.
b. Unbalanced forces cause a change in position.
c. Forces do not affect position.
Unbalanced forces cause a change in position.
300
A horizontal line on a distance-time graph represents: __.
A constant velocity of ZERO (no motion/at rest)
300
Dribbling a basketball
3rd Law of Motion
300
You push against the back of your friends car that is stuck. You push and be become very tired, but the car does not move. Did you do work?
No because the car did not move
300
A lion runs 8 meters in one second. By the end of the next second, the lion has traveled an additional 6 meters. Which best describes the motion of the lion during the two seconds?
The lion has slowed down.
400
One object rubbing against another object produces a force that works against motion. This force is __.
What is FRICTION?
400
The distance covered in a certain amount of time represents __.
Speed
400
When a bus stops suddenly and the riders fall forward
1st Law of Motion
400
If you increase your work and decrease your time, you will have
A- more power
B- less power
C- same amount of power
A- more power
(more work in a faster time)
400
What is the power output of the stickman that pushes the box 5 meters in 3 seconds with a constant force of 12 N?
20 W (watts)
500
The force of attraction between all objects with mass is called __.
What is GRAVITY?
500
A curved line on a distance-time graph represents: __.
Acceleration
500
F=ma
2nd Law of Motion
500
Person A and Person B are both using the same amount of work to lift something. Person A takes half as much time to do it. Who has greater power?
Person A because he/she is faster
500
An objects location is its ________.
What is position?