What is the tendency of an object to resist change?
An example is when you slam on the brakes and your purse continues to go forward and falls on the ground
inertia
What happens to the acceleration of an object as its mass increases?
the acceleration decreases
Distance-______ graphs show the motion of an object
time
True or False: Balanced forces never change the motion of an object.
True
A push or pull is called a:
force
Which Graph shows only a constant velocity?
2
The same toy was rolled down the same ramp three times. Each time it traveled it started at a different point on the ramp. From which starting point was the toy moving the fastest at the finish line?
Point 1
What is the net force? Include direction
50 Newtons to the left
What are the SI units for force? (Hint: Who created the laws of motion?)
Newtons
Velocity includes the ____ and ______ of an object
speed, direction
Between what points is Chris stopped during the race?
D-E
If forces are acting in the same direction, should you add, subtract, multiply, or divide the forces to get your net force?
add
What is the force of gravity on a person or object on the surface of a planet called?
Weight
The change in velocity divided by time =
acceleration
What is the formula for calculating speed?
Speed = Distance/Time
If 2 equal forces are acting in opposite directions, what is the net force? Include units!
0 N
the force that one surface exerts on another when the two rub against each other is called ____
friction
If an object is experiencing at least 1 of these 3 changes in motion, it is accelerating:
List all 3
1. Speeding up
2. Slow down
3. changing direction
The amount of matter in an object is its ____.
mass
Which of these moons has the largest gravitational pull and why?
6, largest mass
According to Newton's 3rd Law, when a ball hits and exerts a force on the ground, the ground
exerts an equal force back on the ball.
Which of these graphs could represent a car driving at a constant rate of acceleration and then slamming on the breaks?
3
Which runner will place last in the race?
C
Which direction will the ball move? Is the ball balanced or unbalanced?
right, unbalanced
Which of these examples is an example of increasing friction. You may choose more than 1
a. putting salt on icy roads
b. putting oil on a pan
c. waxing a surf board
d. adding rocks to a driveway
A,D