Transcript Forces on an object that cause a change in motion

Newton’s Laws
Balanced/Unbalanced Forces
Speed
What is a force?
A push or a pull
When 2 forces are acting in
opposing directions, as shown
below, how do you calculate their
net force?
Subtract
Name 3 examples of how living
things use gravity to help them
survive
What is a balanced force?
Force on an object that
DOES NOT cause a
change in motion
When 2 forces are acting in
the same direction, as
shown below, how would you
calculate their net force?
Add
What is inertia?
The tendency of an object to
remain still or continue
moving unless force is
applied
11. A) Calculate the net
force of the following
scenario:
50N
75N
75N – 50N =
25N to the left
What is an unbalanced
force?
Forces on an object that
cause a change in motion
Draw a diagram that
explains what happens to a
balloon when air is released
What is the formula for
calculating speed?
Speed = distance
time
An object at rest will…..
Remain at rest unless an
unbalanced force acts on
it
11. B) Calculate the net force of the
following:
30N
25N
30N + 25N = 55N to the right
If a car traveled 17 mi in 25min,
then what is it’s speed?
S= d = 17mi =
t 25min
0.68 mi/min
What is Newton’s second
law written as a formula?
F=ma
Force = mass*acceleration
11. C) Calculate the net force of
the following scenario:
45N
70N
70N – 45N = 25N to the
right
If a ball is sitting in a wagon
and the wagon moves forward
or backwards describe what
happens.
The ball will sit still in
the middle unless an
unbalanced force acts
on it
Use the graph below to calculate
the average speed of the runner.
D 120
I 100
S 80
T
A 60
N 40
C 20
E
2
4
6
8 10 12
Time (s)
S= d = 20 = 10m/s
t
2
Victor kicked a 5kg soccer ball
with a force of 4N, and Jose
kicked a 2kg soccer ball with a
force of 8N. Whose ball had the
greater acceleration?
Jose’s….he kicked with an
acceleration of 4 and Victor
kicked with an acceleration
of 0.8
According to the data listed below,
which ball would have the least
force?
Object
Mass
Acceleration
Soccer ball
40g
5 m/s
Tennis ball
5g
100 m/s
Marble
1g
1000 m/s
Soccer ball
What scientific equipment would
you need to measure speed?
Stopwatch, meter stick,
calculator
In the picture below, explain how F=MA would
be used in the situation that follows. The carts
are held together by a string and the spring
between them is compressed. Ms. Simmons
comes along and cuts the string. What is going
to happen to the carts?
Cart A will accelerate
quicker b/c it has less mass
List the lines in order from fastest
to slowest
Blue, Red, Green
Calculate the net force
of the following:
72N
35N
37N to the right
What do we need to do to Channing
to get him to accelerate?
Apply an unbalanced force
Skyler threw the football 17 yards
in 37 seconds. At what speed was
the football traveling?
0.46 yd/sec.
Brandon used a triple beam balance
and determined that the mass of the
rock shown was 274g. Use the image
below to determine the volume?
D=27.4 g/mL
What energy transformations take
place when a battery-operated
radio is in use?
Chemical  Electrical  Sound