Flying Things
A rock is flying in the x-direction: the initial and final velocities are ________.
equal
Noah has a mass of 61.7 kg, what is his weight in N?
605 N
A car is driving with a velocity of 15 m/s. If the car has a mass of 750 kg then what is the momentum of the car?
1,125 Ns
What is the radius of earth?
6.38x106m
Water is flowing down a pipe. If the radius of the pipe is doubled, then the rate at which the water flows is
a) doubled
b) quadruple
c) halved
d) quartered
d) quartered
A penguin is sliding across a field of ice. It has an initial velocity of 24m/s and the final velocity is 8m/s. The penguin then slid into a rocky area that slowed the penguin down. If the penguin was in the rocky area for 2 seconds then what was the rate of the deceleration?
-8m/s2
Brianna is pulling a sled. What angle should she pull the sled at to overcome the force of friction.
a) 45 Degrees
b) 60 Degrees
c) 30 Degrees
d) It Doesn't Matter
c) 30 Degrees
A 500 kg car brakes and comes to a stop. The car stopped in 20 meters. If the work done to the car was 600 J, then what was the force applied by the brakes?
-30N
Marcos and Gio were sad they didn't go to Great America. So, they went to the local fair and rode the carousel. Marcos sat on an outer horse and Gio rode on an inner horse. Who had the greater tangential velocity?
a) Marcos
b) Gio
c) The Same
d) Not Enough Info
a) Marcos
A piston with a cross-sectional area of 0.25 m2 is compressed with a force of 10 N. What is the pressure in the cylinder of the piston?
40 Pa
A ball is thrown straight up into the air. On the way up to its maximum height, the ball's velocity is ________ and its acceleration is _________.
a) +, +
b) +, -
c) -, +
d) -, -
b) +, -
If the force of friction for a sliding piece of wood is 200N and the normal force is 1000N, then what is the coefficient of kinetic friction?
0.2
Mr. Brewer is skiing. He warms up and goes down the flat part of the hill (21 degrees) His second time, he is adventurous and goes down the steep part of the hill (47 degrees). Which attempt will have a greater final velocity?
a) Attempt #1
b) Attempt #2
c) Equal Velocities
d) Not Enough Info
c) Equal Velocities
Ava is swinging a yoyo as a pendulum. If the length of the yoyo is 1.0 meters and the yoyo has a mass of 0.5 kg, then what is the period of the pendulum?
2.01s
Which of the following colors of light in the visible spectrum will have the shortest period?
a) Violet = Wavelength of 4.0x10-7m
b) Green = Wavelength of 5.5x10-7m
c) Red = Wavelength of 7.0x10-7m
a) Violet
A golf ball is falling from its apex at an angle of 45 degrees. If the golf shot had an apex of 39 meters then how long does it take for the ball to reach the apex?
2.82 seconds
a) greater than
b) the same
c) less than
a) less than
A box is lifted up to a bookshelf. Who lifts with the highest power?
Brian - Distance of 2m and Time of 2s
Tyler - Distance of 0.5m and a Time of 1s
Oliver - Distance of 1m and a Time of 0.5s.
Salvador - Distance of 1.5 m and a Time of 2s.
Oliver
Angelica is riding the swings at Great America. If she has a centripetal acceleration of 12 m/s2 and her chair is 3 meters from the axis of rotation, then what was her velocity?
6m/s
3 Amps
A clown is launched from a cannon with an angle of 68 degrees. If the clown is launched a distance of 14.7 meters, then what was the initial velocity?
8.82m/s
A see-saw has two kids sitting on it. Kid #1 is 2 meters from the axel and has a mass of 15 kg. Kid #2 is on the other side and has a mass of 25 kg and is 1 meters from the axel. The see-saw will:
a) Remain Steady
b) Go Down on Kid #1's Side
c) Go Down on Kid #2's Side
b) Go Down on Kid #1's Side
A skier begins on top of a 100m hill at rest. What is his velocity when he reaches the ground?
44.3 m/s
Annaleigh is bowling. She has a mass of 50kg and the bowling ball has a mass of 5kg. After she throws the ball and it is 8 meters from her then what is the force of attraction between her and the ball?
2.61x10-10N
Cristian (a fish) is 6 meters from a magical device that shoots laser beams under water. If he is at the third node in the wave of the laser beam and he is struck by the laser (killing him), then what is the wavelength?
4m