Download Midterm Review for Physics

Physics Midterm Review
Name:________________________
Date:_________________ Period:____
Directions: Answer all questions to your greatest capability and be sure to show all work for full credit. All
questions are worth two points each unless otherwise specified.
Write the definition for the following and units used to express the quantity:
1) Displacement:
8) Force:
2) Velocity:
9) Static Equilibrium:
3) Average Velocity:
10) Energy:
4) Acceleration:
11) Power:
5) Mass:
12) Kinetic Energy:
6) Weight:
13) Gravitational Potential Energy:
7) Gravity:
14) Elastic Potential Energy
1-D Kinematics:
Constant Velocity Problems:
1) What is the difference between speed and velocity?
2) A rocket accelerates at a rate
of 20m/s2 for 10 seconds.
Find how far it goes:
2) Find the velocity of a track runner that travels 10 meters
in 2 seconds:
Free Fall Problems:
3) What is the speed of a car that travels through a 40
meter speed trap in 4 seconds?
A rock is dropped off of the
edge of a cliff. Find the
following:
a)
4) If you are driving in a car for 3 hours at 60 miles per
hour, find how far you will travel?
b) The velocity at each second of free fall:
c)
Acceleration Problems:
1) Find the acceleration of a plane that goes from zero to
150m/s in 18 seconds.
The gravitational acceleration:
How high the cliff is if it takes 3.5 seconds to hit
the ground:
Graphing Motion:
1) Between what points is the object moving the fastest?
2) Between what points is the object not moving?
3) Between what points is the object not accelerating?
4) Between what points is the object traveling with a constant
velocity?
5) What is the velocity of the object from point B to C?
Projectile Motion:
Vertical Launch: On the diagram below label the x and y components of the cannonball’s flight.
Horizontal Launch: A stunt biker rides his bike off of a 15
meter cliff. Use this information to find the following.
1) How long is he in the air for?
2) How far out from the cliff will he land?
3) What is his final vertical and horizontal velocity?
4) What is his total velocity?
2-D Kinemaitcs Multiple Choice:
1) _____:A cannon shoots a projectile across a field (horizontally) with a speed of 480m/s. At the same time another projectile is
dropped at the same height. Which will hit the ground first?
a) The projectile that is shot
b) Te projectile that is dropped
c) Both
d) The projectile that is shoot will not land for an extended amount of time.
2) _____: In the absence of air resistance, the horizontal component of the velocity of a projectile:
A. decreases with distance.
B. is zero.
C. decreases with time.
D. remains constant.
E. increases with time.
Use the following diagram to answer the following questions:
Answer the questions using:
a) A b) B c) A&B or Both
A
B
3) _______: Which cannons cannon ball will hit the ground
first?
4) _______: According to the diagram, which cannon ball has
the greatest y-component of its velocity?
5) _______: According to the diagram, which cannon ball has
the greatest initial velocity?
6) _______: If a ball were dropped from the same height as cannon A and cannon A was shot at the same time, which would hit the
ground first?
7) _______: If cannon A is angled toward the ground and fire at the same time as cannon B, which would hit the ground first?
Forces and Newton’s Laws of Motion:
6) Which 2 planets would have the highest gravitational
field the Earth or Jupiter?
1) What causes a moving object to change direction?
2) What is the difference between a force and a net force?
7) If the following block has a mass of 50KG find the
following:
a) Gravitational force
3) Give an example of something in static equilibrium?
b) Force in each line
4) What is the difference between mass and weight?
5) What are two factors that affect an objects weight?
8) Find the forces at each of the following locations:
9) State Newtons 3 laws of motion:
11) A 100 KG physics student tries out his new jet pack
that can create a propulsion force of 200N. If the
frictional force on him is 50N, find his acceleration<
12) The Earth attracts a small moon that has a mass roughly
4 times smaller than the earths? If the force the earth
pulls the small moon with a force of 100,000N, find the
force that the moon pulls back on the earth:
A. a) 100,000N
B. b) 400,000N
C. c) 25,000N
D. d) Zero
E. e) None of the above
10) Find the next force on a100kg rocket that has a
propulsion force of 2000N and a frictional force from
the air of 500N.
Energy:
Short Answer and Problems:
1) What is energy?
4) Find the kinetic energy of a 2 kg bullet that is traveling
100m/s.
2) What is the difference between potential and kinetic
energy?
3) Find the energy placed into car that starts from rest and
has a 200N force on it for 10 meters.
5) What energy stored in a rubber band that is pulled back
5 meters and has an elastic coefficient of 2N/m?
The following 20kg cart is released from a 75 meter roller coaster and goes
through a loop and is finally stopped by water which applies a constant force of
200N to stop it. Find the missing variable for each location.
Momentum: Please review momentum material.