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AP Physics 1 Forces and Incline Plane Test

Total questions: 24

Worksheet time: 25mins

Name
Class
Date
1.
When you type on the keys of your Chromebook you are using a
a)
pull
b)
push
c)
gravity
d)
friction
2.
A box takes 40 N to start moving when the coefficient of static friction is .54. What is the weight of the box? 
a)
81 N
b)
18 N
c)
98 N
d)
74 N
3.
The friction that keeps non-moving objects in place describes
a)
fluid
b)
rolling
c)
sliding
d)
static
4.
 What is the force of friction between a block of ice that weighs 950 N and the ground if μ = .12? 
a)
65 N
b)
226 N
c)
175 N
d)
114 N
5.
  A 220 Kg crate is pushed horizontally with a force of 700 N. If the coefficient of kinetic friction is 0.20, calculate the acceleration of the crate.   
a)
1.02 m/s2
b)
1.22 m/s2
c)
1.42 m/s2
d)
1.62 m/s2
6.

If there is no friction, then the acceleration would be equal to

a)

mg

b)

sin(θ)mg

c)

g

d)

sin(θ)g

7.
To find the acceleration when friction is present, you would also have to know
a)
coefficient of kinetic friction
b)
coefficient of static friction
c)
you don't need anythying else
d)
both of these
8.

If μk = 0.65 and μs = 0.7, acceleration would be equal to

a)

0 m/s/s

b)

9.8 m/s/s

c)

3.35 m/s/s

d)

-2.63 m/s/s

9.
Which of the following is equal in magnitude to the Normal Force?
a)
(M1)(g)sin28⁰
b)
(M1)(g)cos28⁰
c)
(M2)(g)sin28⁰
d)
(M2)(g)cos28⁰
10.
What is the coefficient of static friction if it takes 44 N of force to move a box that weighs 86 N? 
a)
0.78
b)
0.51
c)
0.78 N
d)
0.58 N
11.
A 80 kg skydiver is free falling at a constant velocity of 19 m/s. What is the net (total) force acting on her?
a)
1,520 N
b)
0 N
c)
4.21 N
d)
Not enough information to answer
12.
If an object is at rest on an inclined plane, which of the following forces is greatest?
a)
Normal Force
b)
Friction
c)
Weight
d)
Both Normal Force and Weight are equal, so they both are the greatest.
13.

Three forces act on a box in an inclined plane as shown in the diagram below. [Vectors are not drawn to scale.] If the box is at rest, the net force acting on it is equal to

a)

the weight

b)

the normal force

c)

friction

d)

zero

14.

What is the x-component of force if the mass of the box is 42kg and the angle is 37º?

a)

329 N

b)

248 N

c)

212 N

d)

350 N

15.

What is the acceleration of a 42 kg box on a 37° angle if the force of kinetic friction is 57 N?

a)

4.5 m/s2

b)

6.5 m/s2

c)

1.3 m/s2

d)

6 m/s2

16.
What are the units on the coefficient of friction?
a)
none
b)
Newtons
c)
meters
d)
kilograms
17.
The force that opposes the force of gravity is called...
a)
force of acceleration
b)
normal force
c)
dissipated force
d)
irregular force
18.
the force due to friction on a bike tire is 70 N. If the coefficient of friction of the road is 0.78, what is the mass of the bike?
a)
89.7
b)
8.97 N
c)
8.97 kg
d)
54.6 kg
19.
Assuming both objects are at rest, which object is more massive? M1 or M2?
a)
M1 is more massive
b)
M2 is more massive
c)
both M1 and M2 are the same mass
20.
The amount of matter in an object is called...
a)
weight
b)
force
c)
mass
d)
gravity
21.
What are the units on the force due to friction?
a)
none
b)
Newtons
c)
meters
d)
kilograms
22.
The friction that keeps non-moving objects in place describes
a)
fluid
b)
rolling
c)
sliding
d)
static
23.

A man standing on a scale in an elevator notices that the scale reads 40 newtons greater than his normal weight. Which type of movement of the elevator could cause this greater-than-normal reading?

a)

accelerating upward

b)

accelerating downward

c)

moving upward at a constant speed

d)

moving downward at a constant speed

24.

A man weighing 800 Newtons is standing in an elevator. If the elevator rises with an acceleration of 0.5 meters per second2, the force exerted by the elevator on the man will be

a)

400 N

b)

800 N

c)

1200 N

d)

1000 N