The distance from start to end, including the direction
c)
How fast an object travels
d)
The speed at which an object travels plus its direction
3.
A dolphin can swim 1.85 km/h. How are far does the dolphin travel after 0.6 hours?
a)
0.63 km
b)
1.1 km
c)
2.5 km
d)
3.7 km
4.
A trucker drives with an average velocity of 27 m/s towards the east on a perfectly straight highway. What will the trucker's displacement be after 2 minutes?
a)
97 m; east
b)
190 m; east
c)
1600 m; east
d)
3200 m; east
5.
What is acceleration?
a)
It is the displacement.
b)
It is the velocity.
c)
It is the rate of change of the displacement.
d)
It is the rate of change of the velocity.
6.
Which of the following is NOT a valid unit for acceleration?
a)
m/s/s
b)
m/s2
c)
km/hr/sec
d)
km/hr
7.
What happens to an object's motion when the velocity is positive and the acceleration is negative?
a)
The object slows down.
b)
The object speeds up.
c)
The object remains at a constant velocity.
d)
The object remains at rest.
8.
A race car accelerates from 0 m/s to 30 m/s with a 45 m displacement. What is the vehicle's acceleration?
a)
2 m/s2
b)
5 m/s2
c)
10 m/s2
d)
15 m/s2
9.
A curious kitten taps a ball of yarn at rest with its paw, displacing the ball of yarn 1.75 cm in 2 seconds. What is the acceleration of the ball of yarn?
a)
11 cm/s2
b)
8.75 cm/s2
c)
14.4 cm/s2
d)
18.8 cm/s2
10.
Which of the following units are used to measure free fall?
a)
m/s
b)
m/s2
c)
m*s
d)
m2/s2
11.
Which of the following is a value for the acceleration of objects in free fall?
a)
4.905 m/s2
b)
-4.905 m/s2
c)
9.81 m/s2
d)
-9.81 m/s2
12.
What is another name for free fall acceleration?
a)
Displacement
b)
Gravitational Acceleration
c)
Instantaneous Acceleration
d)
Negative Velocity
13.
Which would fall with greater acceleration in a vacuum, a leaf or a stone?
a)
Leaf
b)
Stone
c)
The would accelerate at the same rate.
d)
It is difficult to determine without more information.
14.
An increase or decrease in speed or change in direction is known as-
a)
acceleration
b)
time
c)
speed
d)
velocity
15.
A horizontal line on a distance versus time graph represents an object that is-
a)
gaining speed
b)
slowing down
c)
not moving at all
d)
maintaining a constant speed
16.
This motion graph represents:
a)
constant speed
b)
acceleration
c)
body at rest
d)
slowing down
17.
The speedometer on your car measures
a)
average speed.
b)
average velocity
c)
instantaneous speed.
d)
instantaneous velocity.
18.
the magnitude of displacement can never be ________ than the distance travelled by the body
a)
lesser
b)
equal
c)
greater
d)
not greater
19.
___________ of an object between two points is the shortest distance between these points.
a)
distance
b)
speed
c)
displacement
d)
none of above
20.
Speed has a direction.
a)
true
b)
false
21.
The Standard Units for Speed is ?
a)
m/s (meters per second)
b)
ms (meters times seconds)
c)
mskg (meters times seconds kilograms)
d)
m/s*kg (meters per second kilograms)
22.
Which of the following quantities are vectors?
a)
speed, velocity, acceleration
b)
velocity, acceleration, force
c)
force, acceleration, mass
d)
length, mass, time
23.
Which runner stopped for a rest?
a)
Albert
b)
Bob
c)
Charlie
24.
What does this graph represent?
a)
Constant Speed
b)
Acceleration
c)
Not moving
25.
When an object is in free fall,
a)
its speed stays the same.
b)
it decelerates
c)
it accelerates.
d)
none of the above.
26.
If the speedometer of a moving car points to 90 km/h, therefore after two hours the car covers .........................
a)
90 m
b)
180 m
c)
90 km
d)
180 km
27.
Speed equals ...............
a)
distance ÷ time
b)
distance x time
c)
distance + time
d)
time ÷ distance
28.
A dolphin swims 1.50 km/hr. How far has the dolphin swam after 1.00 hr?
a)
1.0 km
b)
1.0 m
c)
1.50 km
d)
1.50 mi
29.
Displacement is (select all that apply)
a)
how far an object is from where it started
b)
how far an object has traveled
c)
a scalar
d)
a vector
30.
A toy car is given an initial velocity of 5.0 m/s and experiences a constant acceleration of 2.0 m/s 2 . what is the final velocity after 6.0s?
a)
10 m/s
b)
12 m/s
c)
16 m/s
d)
17 m/s
31.
Is this a scalar quantity or a vector quantity? Wind blowing at 20 knots
a)
Scalar
b)
Vector
32.
If a boomerang is thrown 20 m in a straight line and returns exactly to the spot it was thrown what is its displacement?
a)
20m
b)
40m
c)
0m
d)
-20m
33.
What is the speed of an object that travels 60 meters in 4 seconds?
a)
240 m/s
b)
15 m/s
c)
0.067 m/s
d)
15 mph
34.
How could a jogger accelerate?
a)
run uphill then downhill
b)
run 10 miles N then run 10 miles back
c)
jog, stop, rest, start again
d)
speed up, slow down, turn corners
แป้นคำตอบ
Physics One Dimensional Motion Test
คำถามทั้งหมด: 34
1.
a) 0 m
2.
d) The speed at which an object travels plus its direction