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STAAR Night Physics

Total questions: 60

Worksheet time: 45mins

Name
Class
Date
1.

Groceries in a car fly forward when the brakes are suddenly pressed. This is an example of

a)

For every action, there is an equal and opposite reaction.

b)

The force of an object is equal to its force times its acceleration.

c)

An object in motion will remain in motion unless acted on by an unbalanced force and an object in motion will remain in motion with constant velocity unless acted upon by an unbalanced force.

2.

A swimmer pushes back on the water and moves forward.

a)

An object in motion will remain in motion unless acted on by an unbalanced force and an object in motion will remain in motion with constant velocity unless acted upon by an unbalanced force.

b)

An object in motion will remain in motion unless acted on by an unbalanced force and an object in motion will remain in motion with constant velocity unless acted upon by an unbalanced force.

c)

For every action, there is an equal and opposite reaction.

3.

A spring scale is used to pull each of the four objects. Based on the information provided, which object experiences the greatest acceleration when pulled with 8 N of force? (8.6A)

a)

Object R

b)

Object S

c)

Object T

d)

Object U

4.

Which graph best represents a car traveling down the freeway at a constant speed? (6.8D)

a)

a

b)

b

c)

c

d)

d

5.

Examine the table. Which of the objects is producing the greatest force? (8.6C)

a)

soccer ball

b)

tennis ball

c)

marble

d)

they are all the same

6.

Two forces are applied to a 17 kg box as shown. The box is on a smooth surface. Which statement best describes the net force and direction the box will move? (8.6)

a)

17 N to the right

b)

7 N to the left

c)

53 N to the right

d)

70 N to the right

7.
What kind of energy does the big rock hold?
a)
kinetic
b)
chemical
c)
potential
d)
nuclear
8.
If the man and the ball travels 90 m in 9 seconds, what is their average speed?
a)
10 m/s
b)
99 m/s
c)
180 m/s
d)
10 meters
9.
Which speed is the fastest?
a)
25 km/hr
b)
38 km/hr
c)
72 km/hr
d)
95 km/hr
10.
If a lizard can run 8m across the water in 4 seconds, how fast is he travelling?
a)
32 m/s
b)
2 seconds
c)
2 m/s
d)
34 meters
11.
This game of tug of war is an example of _________ forces. 
a)
unbalanced
b)
balanced
c)
potential
d)
net zero
12.
If a dolphin can swim 100 meters in 5 seconds, what is the dolphin's speed?
a)
25 m/s
b)
20 m/s
c)
20 meters
d)
500 m/s
13.
This motion graph represents:
a)
constant speed
b)
acceleration
c)
body at rest
d)
slowing down
14.
This motion graph represents:
a)
constant speed
b)
acceleration
c)
body at rest
d)
slowing down
15.
This motion graph represents:
a)
constant speed
b)
body at rest 
c)
acceleration
d)
slowing down
16.
In this distance versus time graph...
a)
The green line is "faster"
b)
The red line is "faster"
c)
The green line is slowing down
d)
The red line is speeding up
17.
Juan and Antonio competed in a 4 mi bike race. Who won?
a)
Kristen Lodge
b)
Juan 
c)
Antonio
d)
Ms. Jackson
18.
What was Juan's average speed?
a)
0.3 mi/min
b)
3.25 mi/min
c)
4 mi/hr
d)
4 hours
19.
Which racer was stationary (at rest) for part of the race?
a)
Antonio, because the horizontal line indicates "at rest"
b)
Juan, because the horizontal line indicates "at rest"
c)
Antonio, because his line is straight
d)
Juan, because he was faster
20.

If the forces acting on a moving object are balanced, what will the object do?

a)

The object will remain motionless.

b)

The object will travel in the direction of the greater force.

c)

The object will travel in the same direction at the same velocity.

d)

The object will travel in the opposite direction at the same velocity.

e)

The object will slow down to a stop.

21.
If the forces acting on an object at rest are balanced, what will the object do?
a)
The object will travel in the direction of the greater force
b)
The object will remain at rest
c)
The object will travel in the direction of the opposite force
d)
The object will remain at test
22.
Force is measured in:
a)
Newtons
b)
Jewels
c)
Joules
d)
Fig Newtons
23.
How does friction affect the speed of a moving object?
a)
Friction speeds up the motion of the objects
b)
Friction slows down the motion of objects
24.
A student applies 2 Newtons of force to a toy car causing it to accelerate at a rate of 10 m/s2. What is the mass of the toy car in kg? 
a)
2 kg
b)
.2 kg
c)
.02 kg
25.
Which of the following is an example of acceleration?
a)
A rollercoaster slows down as it travels uphill
b)
A cyclist travels 40 kilometers in 2 hours
c)
A flock of geese flies north at 55 mph 
d)
An athlete can run about 12.5 km/hr 
26.

A car travels 2.5 hours in a northerly direction for 300 km. Determine the car’s velocity.

a)

125 km/hr South

b)

125 km/hr North

c)

120 km/hr South

d)

120 km/hr North

27.
If a team pulls with a combined force of 9000 N on an airplane with a mass of 30,000 kg, what is the acceleration of the airplane in m/s2? 
a)
3 m/s2
b)
30 m/s2
c)
.3 m/s2
d)
.03 m/s2
28.
The kite flying in the wind is an example of __________ energy.
a)
Potential
b)
Kinetic
29.
The boy standing with a soccer ball is an example of __________ energy.
a)
Potential
b)
Kinetic
30.
The girl jumping rope is an example of __________ energy.
a)
Potential
b)
Kinetic
31.
The bee buzzing around the boy’s head is an example of __________ energy.
a)
Potential
b)
Kinetic
32.
At which point does the water in the waterfall have the greatest gravitational potential energy? 
a)
Point 1
b)
Point 2
c)
Point 3
d)
Point 4
33.
As the rollercoaster moves from point Z to point Y, the potential energy _________ as the kinetic energy __________.
a)
Increases; increases
b)
Decreases; decreases
c)
Increases; decreases
d)
Decreases; increases
34.
As the rollercoaster moves from point Y to point X, the potential energy _________ as the kinetic energy __________.
a)
Increases; increases
b)
Decreases; decreases
c)
Increases; decreases
d)
Decreases; increases
35.
At which of the 4 points does the cart have the least potential energy? 
a)
W
b)
X
c)
Y
d)
Z
36.
If an object travels 42 meters in 6 seconds, what is its average speed? 
a)
6 m/s
b)
7 m/s
c)
48 m/s
d)
252 m/s
37.
In the graph to the right, how many kilometers has the object moved after 10 minutes?  
a)
1 km
b)
1.5 km
c)
2 km
38.
In the graph to the right, how many kilometers has the object moved after 20 minutes?  
a)
1 km
b)
1.5 km
c)
2 km
39.
In the graph to the right, how many minutes did it take for the object to move 3.5 kilometers? 
a)
10 minutes
b)
20 minutes
c)
30 minute
d)
40 minutes
40.
What type of energy is being converted when a glow stick cracks?
a)
Chemical to light
b)
Light to mechanical
c)
Light to chemical
d)
Chemical to electrical
41.
What is the speed of this object at 3 seconds?
a)
5 m/s
b)
45 m/s
c)
5 s/m
d)
45 s/m
42.
What is velocity?
a)
the quickness of an object
b)
the location of an object
c)
acceleration
d)
speed in a specific direction
43.

Which graph represents slowing down?

a)

A

b)

B

c)

C

d)

D

44.
Which graph represents the greatest acceleration?
a)
A
b)
B
c)
C
d)
D
45.
Calculate the speed of a train that traveled 400 miles in 5 hours.
a)
20 mph
b)
20 m/s
c)
80 mph
d)
80 m/s
46.

A car hitting the breaks and slowing down at a stop light

a)

It is acceleration

b)

It is NOT acceleration

c)

That car is cool

47.
Which could be an example of a balanced force?
a)
An asteroid moving at a constant speed through space 
b)
A car accelerating from a stop sign
c)
A box of dishes falling from a counter 
d)
A rocket taking off 
48.

Which activity would BEST demonstrate the Law of Action/Reaction?

a)

A car traveling down the road.

b)

A rocket launching to space.

c)

A soccer ball sitting on the ground.

d)

A lady pushing a grocery cart.

49.

Which activity would BEST demonstrate Newton's law of Inertia?

a)

A plate sits on a table top.

b)

A lady pushes a grocery cart.

c)

A child jumps on a trampoline.

d)

A boy swings a baseball bat.

50.
A runner races in the 100 meter dash.  It takes her 10 seconds to finish.  What is her average speed?
a)
10 m/s
b)
1000 m/s
c)
100 seconds
d)
10 seconds
51.
Shona cycles at an average speed of 8km/h. How far has she travelled if she cycles for 4 hours?
a)
55km
b)
32km
c)
43km
d)
32miles
52.
Acceleration is
a)
increasing speed
b)
decreasing speed
c)
changing direction
d)
all of the above
53.
Which has more Inertia? (so need more force to move) 
a)
Truck
b)
Ant
c)
A cat
d)
A skateboard
54.
After a cannonball is fired into frictionless space, the amount of force needed to keep it going equals
a)
twice the force with which it was fired
b)
the same amount of force with which it was fired
c)
1/2 the force with which it was fired
d)
zero, since no force is requires to keep it moving. 
55.
If the force of gravity suddenly stopped acting on the planets they would
a)
spiral slowly toward the sun
b)
continue in their orbits for a short time
c)
move in straight lines tangent to their orbits
d)
fly straight away from the sun
56.
If you exert a net force of 8 N on a 2-kg object, what will its acceleration be?
a)
2 m/s2
b)
4 m/s2
c)
16 m/s2
d)
10 m/s2
57.
 What kind of energy is in gasoline in a car tank (car is not on)?
a)
Potential
b)
Kinetic
58.
The faster an object moves, the ________ kinetic energy it has. 
a)
more
b)
less
c)
none of the above
d)
all of the above 
59.
An archer pulls the bowstring back, then releases the string and the arrow flies forward. Pulling the string back is the...
a)
action force
b)
reaction force
c)
net force
d)
inertia
60.
An archer pulls the bowstring back, then releases the string and the arrow flies forward. The arrow flying forward is the...
a)
action force
b)
reaction force
c)
net force
d)
inertia

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