Overall though, the concepts and set up are the same.
Going through
old notes/HW’s might help you study.
27)
A person of mass 60 kg is 3 m from another person whose mass is 80 kg.
What is the gravitational
force between them?
3.56x10
8
N
28)
A communications satellite orbits the Earth at an altitude of 35,000km above the Earth’s surface.
Mass Earth= 6x10
24
6
m.
What is the satellite’s velocity?
3,109.13m/s
29)
Mass of Pluto is 1.25x10
22
kg and has a radius of 1.195x10
6
meters.
What is the acceleration due to
gravity on Pluto’s surface?
0.58m/s
2
WORK, ENERGY, AND POWER
:
30)
A horizontal 300N force pushes a 40kg object over 10 meters of a frictionless and horizontal
surface.
After this, the block slides up a 20° incline.
Assuming the incline has a coefficient of kinetic
friction of 0.4, how far along the incline with the object slide?
10.66m
31)
The two blocks are released from rest.
After the 60 kg mass on the left moves down a
distance of 3 m, it is traveling at 1.25 m/s.
What is the unknown mass on the right if they are
starting from the same height?
56.9 kg
32)
A 6kg block is at rest against a spring that has a constant of 1,750N/m.
The spring is
initially compressed 0.3m.
When the block is released, it slides along a horizontal surface
that has a coefficient of kinetic friction of 0.12 for 3m.
The block then goes up a 12º incline where it
comes to a stop after traveling 4.5m along the incline.
What is the coefficient of kinetic friction between
the block and the incline?
0.0099
33)
A 2,500 kg elevator is lifted from rest to a height of 5 m where it is moving at 3 m/s.
If the time
required to lift the elevator is 8 s, what is the power output of the motor that pulls on the cable which
then pulls on the elevator.
16,718.75 W
IMPULSE AND MOMENTUM
;
1)
A 2000kg car traveling right at 20m/s has a perfectly inelastic collision with a car traveling left at 35
m/s.
After the collision, they travel to the right at 5 m/s.
What is the mass of the other car?
750 kg
2)
A pool cue ball, mass 0.7 kg, is traveling at 2 m/s when it collides head on with another ball, mass
0.5 kg, traveling in the opposite direction with a speed of 1.2 m/s.
After the collision, the cue ball
travels in the opposite direction at 0.3 m/s.
What is the velocity of the other ball?
2.02 m/s
3)
A 1000kg car is traveling east at 20m/s when it collides inelastically with a northbound 2000kg car
traveling at 15m/s.
If the coefficient of kinetic friction is 0.9, how far do the two cars skid before
coming to a stop?
Also, what angle do they travel at?
8.19m, 56.3º
4)
A cue ball, mass 1kg, travels horizontally and collides with a stationary billiard ball, mass 0.8 kg.
After the collision the cue ball travels backwards at an angle of 30º above the horizontal.
The other
billiard ball travels at a speed of 8 m/s at an angle of 20º below the horizontal.
What is the initial
velocity of the cue ball?
2.22m/s
This is the end of the preview.
Sign up
to
access the rest of the document.
 Fall '12
 Lahm
 pH, Force, Friction, Mass, Light, AP Physics, Velocity, Santa

Click to edit the document details