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

2

4

6

8

10

12

14

1 2 3 4 5

Mass

Acc

eler

atio

n

a

b

a

b