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Conceptual Unit 1 Test Review

Total questions: 39

Worksheet time: 26mins

Name
Class
Date
1.

Two metal balls are the same size but one weighs twice as much as the other. The balls are dropped from the roof of a single story building at the same instant of time. The time it takes the balls to reach the ground below will be:

a)

about half as long for the heavier ball as for the lighter one.

b)

about half as long for the lighter ball as for the heavier one.

c)

about the same for both balls.

d)

considerably less for the heavier ball, but not necessarily half as long.

e)

considerably less for the lighter ball, but not necessarily half as long.

2.

A stone dropped from the roof of a single story building to the surface of the earth:

a)

reaches a maximum speed quite soon after release and then falls at a constant speed thereafter.

b)

speeds up as it falls because the gravitational attraction gets considerably stronger as the stone gets closer to the earth.

c)

speeds up because of an almost constant force of gravity acting upon it.

d)

falls because of the natural tendency of all objects to rest on the surface of the earth.

e)

falls because of the combined effects of the force of gravity pushing it downward and the force of the air pushing it downward.

3.

Acceleration is

a)

rate at which velocity changes

b)

speed

c)

rate at which distance changes

d)

in units of m/s

4.

Acceleration includes going around a curve at a constant speed

a)

true

b)

false

5.

vectors have both magnitude and

a)

time

b)

energy

c)

direction

d)

speed

6.

When the forecaster says the wind is moving from north to north west at 5 m/s, he is representing wind as a

a)

vector

b)

magnitude

c)

scalar

d)

distance

7.

Terminal velocity is achieved when a falling object stops accelerating because air resistance has cancelled out the force of gravity. A baseball will have a higher terminal velocity than a _____________?

a)

feather

b)

bowling ball

c)

piano

d)

full grown man

8.

Free fall is when an object falls only due to gravity (like when something is in a vacuum chamber), thus we ignore ________________ when looking at its acceleration?

a)

mass

b)

gravity

c)

air resistance

d)

weight

9.

If you walk all the way around the track you have walked a positive distance, but ___________ displacement.

a)

positive

b)

negative

c)

more

d)

0

10.

velocity and displacement are not _______________?

a)

in physics

b)

scalars

c)

vectors

d)

used to calculate distances

11.

If you go 1km in 1 min, what is you average speed? (hint : s=d/t)

a)

16.66 m/s

b)

1000 m/s

c)

1 m/s

d)

100 m/s

12.

The speedometer in your car tells you the ___________?

a)

acceleration

b)

time

c)

instantaneous speed

d)

average speed

13.

A ball, thrown in the air, or dropped, has an acceleration of _______?

a)

10 m/s/s

b)

1 m/s/s

c)

0 m/s/s

d)

100 m/s/s

14.

In the position vs time graph, what is the objects position at 10 s?

a)

60 m

b)

10 m

c)

30 m

d)

15 m

15.

In the position vs time graph, what is the objects velocity at 20 s? (Hint: on the position vs time graph, velocity is the slope (change in y over change in x))

a)

-4 m/s

b)

10 m/s

c)

30 m/s

d)

15 m/s

16.

What is the objects velocity after 3 seconds?

a)

1 m/s

b)

10 m/s

c)

16 m/s

d)

12 m/s

17.

What is the objects acceleration at 3 seconds? (hint: acceleration is slope in the velocity vs time graph (change in y over change in x))

a)

1 m/s/s

b)

4 m/s/s

c)

16 m/s/s

d)

12 m/s/s

18.

The change in velocity over a time interval is ___________?

a)

displacement

b)

speed

c)

acceleration

d)

velocity

19.

Kinematics is the _______________?

a)

study of when things move

b)

study of how things move

c)

study of why things move

d)

study of if things move

20.

time , distance and mass are in standard units of ____________?

a)

s / m / kg

b)

min / miles / grams

c)

k / m / ly

d)

mm / s / lbs

21.

The symbol for change is the Greek symbol that looks like a triangle called ____________?

a)

alpha

b)

bravo

c)

charlie

d)

delta

22.

Acceleration due to gravity causes falling objects to fall

a)

but stop after enough time has gone by

b)

at a constant speed

c)

slowly and then slower

d)

faster and faster

23.

If Stacy starts at rest and then runs a mile. I will say her initial velocity is ___________?

a)

1600 m/s

b)

0 m/s

c)

1 m/s

d)

1000 m/s

24.

If I used a vacuum to remove all the air from the room, a dropped feather and bowling ball would ____________?

a)

hit the ground at the same time

b)

never hit the ground

c)

hit the ground at different times

d)

float

25.

If I am running at 10 m/s and accelerate at -2 m/s/s to come to a stop, how long will it take? (hint: t= (change in velocity)/a)

a)

20 s

b)

10 s

c)

5 s

d)

1 s

26.

An airplane goes south 5000 m in 10 seconds. What is it's velocity? (hint: s=d/t)

a)

500 m/s

b)

50000 m/s

c)

50 m/s

d)

5 m/s

27.

The track is 400 m around, if I walk around it once, I have gone a distance of ____________?

a)

800 m

b)

0 m

c)

400 m

d)

100 m

28.

The track is 400 m around, if I walk around it once, I have gone a displacement of ____________?

a)

800 m

b)

0 m

c)

400 m

d)

100 m

29.

I walk 1 m north, then 2 m south and then 3 m north. My distance from start to finish is _______?

a)

4 m

b)

6 m

c)

2 m

d)

8 m

30.

I walk 1 m north, then 1 m south and then 4 m north. My displacement from start to finish is _______?

a)

4 m N

b)

6 m S

c)

2 m N

d)

8 m S

31.

I walk 1 m north, then 2 m south and then 3 m north and it took me 12 seconds. My average speed from start to finish is _______? (hint: avg speed = distance / time

a)

4 m/s

b)

6 m/s

c)

0.5 m/s

d)

8 m/s

32.

I walk 1 m north, then 1 m south and then 4 m north and it takes me 4 seconds. My average velocity from start to finish is _______? (hint: avg velocity = displacement / time)

a)

4 m/s N

b)

6 m/s S

c)

1 m/s N

d)

8 m/s S

33.

Sound travels at 343 m/s. If I see someone through my binoculars blowing a car horn and then I hear the sound 3 seconds later, how far away is the guy sounding his horn. (hint: s=d/t and d=st)

a)

1029 m

b)

50 m

c)

10,052 m

d)

115 m

34.

I drop my penny off the bridge, it takes 2 seconds to hit the ground. The bridge must be how high? (hint: d=1/2gt^2 and g =10 m/s/s)

a)

5 m

b)

100 m

c)

10 m

d)

20 m

35.

On the position vs time graph, from zero to 1 second, the object is ____________?

a)

speeding up

b)

not moving

c)

moving at a constant velocity

d)

going in a negative direction

36.

On the position vs time graph, at 3 seconds, the object is ____________?

a)

speeding up (accelerating)

b)

not moving

c)

moving at a constant velocity

d)

going in a negative direction

37.

On the position vs time graph, at 5 seconds, the object is ____________?

a)

speeding up (accelerating)

b)

not moving

c)

moving at a constant velocity

d)

going in a negative direction

38.

Jimmy dropped his notebook off the 5 m high stairwell. How long did it take his notebook to hit the ground? (d=1/2 a t^2 and a = g = 10 m/s/s)

a)

10 seconds

b)

5 seconds

c)

1 second

d)

100 seconds

39.

My car sped along at 50 m/s for 1 minute. How far did the car go during that minute? (hint: s=d/t and d=st , don't forget conversions)

a)

3000 m

b)

6000 m

c)

50 m

d)

5 m