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WorksheetsCheckpoint Review
Total questions: 25
Worksheet time: 13mins
What type of quantity is momentum?
Value
Unit
Vector
direct
What happens to momentum if you double the speed of a particle?
It stays the same
It gets doubled
It gets halved
It is tripled
What is the momentum of a 0.155 kg baseball thrown with a velocity of 30m/s toward home plate?
4.65 kg•m/s
6.45 kg•m/s
5.46 kg•m/s
4.56 kg•m/s
A 3 kg ball is accelerated from rest to a speed of 15 m/sec. What is the ball’s momentum?
54 kg•m/s
5.4 kg•m/s
45 kg•m/s
4.5 kg•m/s
A _____________ is any moving object that is only under the force of gravity.
satellite
projectile
free floater
vector
A carnival ride has a 3.0m radius and rotates once every 1.5s. What is the speed of the rider?
ac = 4π^2r ÷ T^2 V = √acr
13 m/s
5 m/s
11 m/s
9.4 m/s
the gravitational force between two masses is inversely proportional to the square of ____________.
The distance between them
the sum of the masses
the product of the masses
The strength of the gravitational field
What is the equation for Newton’s law of universal gravitation?
G = F(m1m2/r^2)
F = G(m1m2/r^2)
T^3 = (4pi^2/Gms)r^2
T = (4pi^2/Gms)r^3
You have a mass of 54 kg and Earth has a mass of 5.97 X 10^24 kg. The radius of Earth is 6.38 X 10^6 m. What is the force of gravitational attraction between you and Earth?
G = 6.67 X 10^‒11
6.60 X 10^2 N
5.28 X 10^2 N
9.80 N
4.40 X 10^2 N
Kepler's First law states that any orbiting body follows a(n) path.
Circular
eliptical
focus
rhomboid
A small concrete cylinder has a mass of 30 kg and a radius of 0.17 m with an axis of rotation through the center. What is the period of the cylinder? T = 1/2(mr^2)
0.3335 kgm^2
0.5334 kgm^2
0.4335 kgm^2
0.3534 kgm^2
Which has a greater effect on electric charges, gravitational forces or electric forces?
Electric
Gravitational
They are equal
There is no way to tell
What, specifically, is the equation GPE = mgh used to calculate?
elastic potential energy
potential energy
rotational potential energy
gravitational potential energy
A collision in which the kinetic energy is completely conserved is called ___________.
elastic collision
inelastic collision
mechanical collision
preserved collision
What is the direction of the force on a positive test charge when it is near another positive charge?
away from
toward
parallel to each other
perpendicular to each other
Any charged object will create a(n) ______________ around it.
electric field line
electric potential difference
gravitational force
electric field
Metals contain _____ electrons; rubber has _____ electrons.
free, bound
excess, insufficient
insufficient, excess
bound, free
A/An _____ is equal to one joule per coulomb, while a/an _____ is a unit of energy.
joule, volt
volt, joule
joule, newton
volt, newton
Energy in a closed, isolated system can neither be created nor destroyed is known as the ______________________.
law of conservation of energy
law of conservation of mass
law of mechanical energy
law of thermal energy
A weight trainer lifts a 90.0-kg barbell from a stand 0.90 m high and raises it to a height of 1.75 m. What is the increase in the potential energy of the barbell-Earth system?
8210 J
654 J
750 J
540 J
The direction of the force on a positive test charge near a negative charge is _____ the other charge.
away from
toward
parallel to
perpendicular to
How do we show a picture of an electric field that also indicates the strength of that field?
Capacitors
Electric potential differences
Electric Fields
Electric field lines
Charging by _____ charges an object without touching it with a charged body, while charging by _____ charges a neutral body by touching it with a charged body
conduction, induction
induction, conduction
force, conduction
force, induction
A/An _____ is described as a type of circuit in which there is more than one current path.
Series circuit
Parallel Circuit
Short circuit
voltage divider
A hair dryer pulls 10.416 Amps of current when connected to a 125 V power supply. Find the resistance of the hair dryer.
10 Ohms
12 Ohms
15 Ohms
19 Ohms
