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QSU 3063 - Angular Kinematics

Total questions: 30

Worksheet time: 55mins

Name
Class
Date
1.
A Ferris wheel, rotating initially at an angular speed of 0.50 rad/s, accelerates over a 7.0-s interval at a rate of 0.040 rad/s2. What is its angular speed after this 7-s interval?
a)
0.2 rad/s
b)
0.3 rad/s
c)
0.46 rad/s
d)
0.78 rad/s
2.
If the translational velocity of an object is 3 m/s, and is located a distance of 2 m from the axis of rotation, what is the object's angular velocity?
a)
0.67 rad/s
b)
1.5 rad/s
c)
5 rad/s
d)
6 rad/s
3.
A fan blade, initially at rest, rotates with a constant acceleration of 0.025 rad/s2. What is the time interval required for it to reach a 4.2 rad displacement after starting from rest   
a)
1.8 s
b)
2.0 s
c)
16 s
d)
18 s
4.
A 0.12-m-radius grinding wheel takes 5.5 s to speed up from 2.0 rad/s to 11.0 rad/s. What is the wheel's average angular acceleration?
a)
9.6 rad/s/s
b)
4.8 rad/s/s
c)
3.1 rad/s/s
d)
1.6 rad/s/s
5.

A gear spins at a rate of 400 revolutions/minute. Which choice is closest to its angular speed in radians/second?

a)

6.67 rad/s

b)

2500 rad/s

c)

41.9 rad/s

d)

20.9 rad/s

6.

A gear spins at a rate of 400 revolutions/minute. Which choice is closest to its angular speed in radians/second?

a)

63.67 rad/s

b)

41.9 rad/s

c)

3819.71 rad/s

d)

2594.31rad/s

7.

A flywheel starts from rest, and has an angular acceleration of 4 rad/s2. What will be its angular speed when it has made 2 revolutions?

a)

7.09 rad/s

b)

6.35 rad/s

c)

10.03 rad/s

d)

5.01 rad/s

8.

Two bugs ride a turntable which is rotating at a constant rate of 4 rad/s. Bug A is at a radius of 4 cm, while bug B is at a radius of 8 cm. What is the velocity of bug B?

a)

32 cm/s

b)

2 cm/s

c)

0.30 cm/s

d)

15 cm/s

9.

A disk rotates with an angular speed ω\omega  . What is the linear speed v of a point on the disk located a distance r away from the axis of rotation?

a)

ωr\omega r  

b)

ωr\frac{\omega}{r}  

c)

rω\frac{r}{\omega}  

d)

ω2r\omega^2r  

10.

Convert 1.0 radians into degrees.

a)

30o

b)

57o

c)

167o

d)

230o

11.

Convert 30o into radians.

a)

0.52 rad

b)

3.7 rad

c)

94 rad

d)

1700 rad

12.

In each of the two cases, linear and angular, the __________ is constant.

a)

Velocity

b)

Displacement

c)

Acceleration

d)

Speed of sound

13.

So, what does the virtual lab illustrate about the relationship between Linear Kinematics and Angular Kinematics?

4 lines
14.

Velocity is...

a)

The rate of change of acceleration

b)

The rate of change of displacement

c)

The rate of change of distance

d)

The rate of change of speed

15.

What is the difference between a vector quantity and a scalar quantity?

a)

A scalar has a magnitude and direction and a vector has only a magnitude

b)

A vector has a magnitude and direction and a scalar has only a magnitude

c)

A scalar has a direction and a vector has a magnitude

d)

None of the above

16.

An unladen swallow flies 5 m/s. How far has the bird traveled after 1 min?

a)

5 m

b)

12 m

c)

120 m

d)

300 m

17.

Which of the following is a vector quantity?

a)

Velocity

b)

Acceleration

c)

Displacement

d)

All of the above

18.
Motion sensors recorded the following data about a runner during a cross-country race. During which segment of the race did the runner have the greatest speed?
a)
W
b)
X
c)
Y
d)
Z
19.

What is the acceleration of an object moving at constant velocity?

a)

2 m/s2

b)

1 m/s2

c)

0 m/s2

d)

0.8 m/s2

20.

When velocity is negative and acceleration is negative, what happens to the object’s motion?

a)

The object slows down

b)

The object speeds up

c)

Nothing happens to the objects motion

d)

The object remains at rest

21.

A dolphin swims 1.85 km/hr. How far has the dolphin travelled after 0.6hr?

a)

1.1 km

b)

2.5 km

c)

0.63 km

d)

3.7 km

22.

A coin released from rest from the top of a tower hits the ground after 1.5 seconds. What is the speed of the coin as it hits the ground?

a)

15 m/s

b)

21 m/s

c)

31 m/s

d)

39 m/s

23.
The graph respresents
a)
no motion
b)
constant velocity
c)
increasing velocity
d)
decreasing velocity
24.

What is the person doing from 5 seconds to 10 seconds?

a)

Walking

b)

Running

c)

Standing Still

d)

Walking Fast

25.
According to the graph how far does the person travel in the first 5 seconds?
a)
2 m
b)
10 m
c)
0 m
d)
5 m
26.

What quantity is equal to the slope of this graph?

a)

Distance

b)

Displacement

c)

Acceleration

d)

Velocity

27.

An object is thrown into the air at 60 m/s, straight up. What is its velocity at the highest point?

a)

0 m/s

b)

-9.8 m/s

c)

60 m/s

d)

-60 m/s

28.
Scott travels north 5 miles and then goes west 3 miles before coming straight back south 2 miles. What is his distance?
a)
10
b)
7
c)
8
d)
6
29.

A dog running with an initial speed of 7.5 m/s comes to a stop in 15 seconds. What is the dog's acceleration?

a)

-7.5 m/s

b)

-7.5 m/s2

c)

-0.5 m/s2

d)

7.5 mi//hr

30.

A race car starting from rest accelerates uniformly at a rate of 4.90 m/s2. What is the car's speed after it has traveled 200 meters?

a)

1960 m/s

b)

62.6 m/s

c)

44.3 m/s

d)

31.3 m/a

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