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Definitions
Solving
BIG G
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Definitions - $100
•True or False
–An object traveling at a constant
speed cannot be accelerating.
ANSWER
Definitions - $200
• What direction does the
acceleration vector point for an
object that is traveling in a
circle??
ANSWER
Definitions - $300
• What direction does the
velocity vector point for an
object that is traveling in a
circle??
ANSWER
Definitions - $400
Describe the motion of an
object that is moving in
uniform circular motion
using velocity and
acceleration
ANSWER
Definitions - $500
Kara Lott is practicing winter driving in the GBS parking
lot. Kara turns the wheel to make a left-hand turn but her
car continues in a straight line across the ice. Teacher A and
Teacher B had viewed the phenomenon. Teacher A argues
that the lack of a frictional force between the tires and the
ice results in a balance of forces which keeps the car
traveling in a straight line. Teacher B argues that the ice
placed an outward force on the tire to balance the turning
force and thus keep the car traveling in a straight line.
Which teacher is (A or B) is the physics teacher?
ANSWER
Solving - $100
Find the speed of an
object that has a radius of
12m and takes 23s to
travel around the circle
once.
ANSWER
Solving - $200
If a 25 kg object is moving
in a circle with an
acceleration of 3.5 m/s/s,
what is the magnitude of
the centripetal force acting
on the object?
ANSWER
Solving - $300
A string breaks when under a
tension of 16N. A boy uses this
string to whirl a 3kg stone in a
horizontal circle with a radius
of 2.5m. The boy continuously
increases the speed of the stone.
At what speed will the string
break?
ANSWER
Solving - $400
A moving ball is spun in a circle with a
diameter of 5 m at a speed of 6 m/s.
What is its centripetal acceleration?
ANSWER
Solving - $500
Find the tangential
velocity of a person
standing on the equator
of the earth. The radius
of the earth is 6378 km.
ANSWER
Big G- $100
•True or False, if false
correct the statement…
•Astronauts float in space
ships because gravity is
too weak to keep them on
the floor.
ANSWER
Big G - $200
The moon does not fall into the earth because
a) It is pulled by the earth’s gravity
b) The net force on it is zero
c) It is beyond the pull of earth’s gravity
d) It is being pulled in the other direction by
the sun and the other planets
e) all of the above
f) none of the above
ANSWER
Big G - $300
• What is the gravitational force on a 70kg
person due to the moon? The mass of the
moon is 7.36 x1022 kg and the distance to
the moon is 3.82 x 108 m.
ANSWER
Big G - $400
Suppose that two objects attract
each other with a force of 16 units.
If the distance between the two
objects is doubled, what is the new
force of attraction between the two
objects?
ANSWER
Big G - $500
Newton’s Law tells us
that every particle is
attracted to every
other particle. So why
doesn’t a space ship
crash into earth?
ANSWER
FBD's - $100
A bucket full of water is swung in a
vertical circle. Draw a force diagram
for the bucket when it is at the top of its
circular path
ANSWER
FBD's - $200
An ball is being swung in a
horizontal circle. Draw an
FBD.
ANSWER
FBD's - $300
• A bucket full of water is swung in
a vertical circle. Draw a force
diagram for the bucket when it is
at the bottom of its circular path
ANSWER
FBD's - $400
A plane is doing a loop-da-loop in
the air. Draw an FBD for the pilot
when she is completely upside down
ANSWER
FBD's - $500
A car is driving over a hill.
Draw a FBD.
Now the car is going around a
corner. Draw another FBD
ANSWER
Cars & Roller Coasters - $100
If a car is going over the top of a
hill is the normal force bigger,
smaller, same size or doesn’t
matter in comparison to the
force of gravity?
ANSWER
Cars & Roller Coasters - $200
The Graviton at Troy Daze is a ride in which
occupants line the perimeter of a cylinder and
spin in a circle at a high rate of turning. When the
cylinder begins spinning very rapidly, the floor is
removed from under the riders' feet. What effect
does a doubling in speed have upon the
centripetal force?
ANSWER
Cars & Roller Coasters - $300
Draw an FBD for a roller coaster at
the top of a loop.
(when the coaster is upside down)
ANSWER
Cars & Roller Coasters - $400
• A 1200-kg car is driving over a hill
that has a radius of curvature of 60
m. What is the maximum speed the
car can go in order to remain on the
hill and avoid going airborne?
ANSWER
Cars & Roller Coasters $500
A Jeep of mass 1610 kg is moving at a constant speed
of 20 m/s on an unbanked curve with 190 m radius.
What must be the minimum coefficient of friction between
the tires and the road?
ANSWER
****Answers****
Definitions - $100
FALSE
DONE
Definitions - $200
Towards the center
DONE
Definitions - $300
Tangent to the circle
DONE
Definitions - $400
• Its speed is constant
• Its velocity is changing
• Its acceleration is towards the center
DONE
Definitions - $500
A
DONE
Solving - $100
v = 3.2 m/s
DONE
Solving - $200
87.5 N
DONE
Solving - $300
3.65 m/s
DONE
Solving - $400
14.4 m/s/s
DONE
Solving - $500
463.8 m/s
DONE
Big G - $100
• False
–They are in free fall
DONE
Big G - $200
F
DONE
Big G - $300
0.00236N
DONE
Big G - $400
4 units
DONE
Big G - $500
Objects fall in curved paths. An object
orbiting is in free fall but the
curvature of its path matches the
curvature of the earth.
DONE
FBD's - $100
DONE
FBD's - $200
DONE
FBD's - $300
DONE
FBD's - $400
DONE
FBD's - $500
DONE
Cars & Roller Coasters - $100
Smaller
DONE
Cars & Roller Coasters - $200
It will be 4 times bigger than before.
DONE
Cars & Roller Coasters - $300
DONE
Cars & Roller Coasters - $400
24.2 m/s
DONE
Cars & Roller Coasters - $500
0.21
DONE
CONTINUE
CONTINUE
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