force and motion review
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Force and Motion Review
Introductory PhysicsPart A
1) What 2 factors are involved in
calculating speed?
a)Distance and speedb)Distance and timec)Velocity and timed)Velocity and speed
Distance and time
2) What is the equation for acceleration?
a) time interval/ change of velocityb) change of velocity/ time intervalc) distance/time
d)Time/distance
change of velocity/ time interval
3) A bike goes from rest to 30 km/h in 20 seconds what is the
acceleration?a) 1.25b) 50c) 10d) 1.51.5
4) In 3 seconds a car increases its speed
from 40km/h to 45km/h while a
bicycle goes from rest to 5km/h which
has a greater acceleration?
a) carb) bikec) samed) I don’t
know
same
5) The rate at which velocity changes with
time where the change in velocity may be in
magnitude or direction or both. This is the definition
of:
a) speedb) velocityc) free falld) accelerationacceleration
6) The formula for distance
traveled in free fall is d =
a) 1/2gt(2)b) 1/2gt2
c) 1/2g2td) 1/2tg(2)
1/2gt2
7) The amount of matter in an
object is
a) weightb) massc) volumed) area
mass
8)The amount of space taken up by an object is
a) weightb) massc) volumed) surface area
volume
9) “Every material object continues in its state of rest,
or in uniform motion in a straight line, unless acted upon by an unbalanced force.” What is this law?
a) Newton’s first lawb) Newton’s 2nd lawc) Newton’s 3rd lawd) Momentum law
Newton’s first law
10) The acceleration of an object is directly
proportional to thea) massb) forcec) speedd) velocity
force
11) What is force?
a) potential energyb) a push or a pullc) workd) kinetic energy
A push or a pull
12) Acceleration is inversely
proportional to:
a) forceb) massc) workd) pressure
mass
13) When the acceleration of an
object is zero, we say that the object doing
what?a)Free fallingb) changing directionc) speeding upd) constant motion or staying stillConstant motion or staying still
14) For every action force there is an
equal and opposite:a) energy flowb) accelerationc) reaction forced) Newton's 3rd law
reaction force
15) Which of the following are most important in
determining the amount of gravity between two
objects?a) time and weightb) Mass and distancec) Force and massd) distance and weight
Mass and distance
16) What law is this: F = Gm1m2
d2
a) Ohm’s Lawb) Coulomb’s Lawc) Law of Universal Gravitationd) Newton’s 1st Law of Motion
Law of Universal Graviation
17) What is density?
a) how heavy an object isb) force/areac) mass/volumed) weight/volume
Mass/volume
18) Calculate the speed of a car that went 144 miles in 1
hour 30 minutes
a) 96 mphb) 216 mphc) 72 mphd) 115 mph
96 mph
19) What is the force required to
accelerate a 32 kg. box at a rate of 3
m/s2?
a) 35 Nb) 96 Nc) 10.67 Nd) There are several forces
96 N
20) Newton’s second law states
a) F= mab) P1V1 = P2V2c) D = m/vd) P = force/area
F= ma
21) An object that is in free fall
but not accelerating any
more must be
a) on the groundb) experiencingc) At terminal velocityd) deceased
At terminal velocity
22) After 4 seconds of free fall, an object
should be traveling at ___ m/s
a) 10b) 15c) 25d) 4040
23) The weight of a 2 kg. Box of
chocolates would be____ N.
a) 2b) 20c) .2d) 12
20
24) What is the net force if an object is pushed west with a
force of 5 N and east with a force of 25 N.
a) 20 N eastb) 20 N westc) 30 N eastd) 30 N west
20 N east
25) A force vector shows
both ________ and direction.
a) pressureb) Magnitude (amount)c) energyd) power
Magnitude (amount)
26) A car and a truck collide head-on. The car has a mass half that of the truck. The impact
force of the truck on the car is 500 N. what is the
impact force of the car on the truck
a) 250 Nb) 500 Nc) 750 Nd) Not sure
500 N
27) An object following a
straight-line path at constant
speeda) has zero accelerationb) Must be moving in a vacuum or
in the absence of air friction.c) Has no forces acting on itd) Has a net force acting in the
direction of motion
has zero acceleration
28) 74 cm = ____ m
a) 0.74b) 7.4c) 7400d) None of these
0.74
28) 478 mL = ____ L
a) 0.478b) 4.78c) 4780d) None of these
0.478
29) Which of the following graphs shows the relationship between mass and
acceleration?
a) b)c) None of these
a
Newton's Second Law
0
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8
10
12
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1 2 3 4 5
Mass
Acc
eler
atio
n
a
b
a
b
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