WorksheetsUnit 2: Force Review
Total questions: 27
Worksheet time: 14mins
Name
Class
Date
1.
Last Name, First name
4 lines
2.
Class period
a)
1
b)
3
c)
4
d)
5
e)
6
3.
_______ force explains the force that resists the motion of an object due to contact between their surface .
a)
Net
b)
Normal
c)
Friction
d)
Inertia
4.
Sam pushes on a rock with 7N towards west. Buck pushes on the rock with 8 N of force towards the east. The rock should roll ______ with a force of _____ newtons.
a)
east, 5
b)
east, 15
c)
West, 5
d)
east, 1
5.
A car falls off a 8 meter cliff and lands 20 meters east of the base of the cliff. What is the displacement of the car from the top of the cliff in x and y form.
a)
(-8, 20)m
b)
(20,8)m
c)
(10n, 5)
d)
(45, 8 N)
e)
(20, -8)m
6.
Jayden walks 15 meters east (A) and 19 meters north (B) to get to school. How far would Jayden walk if he took the short cut along path C.
a)
586 M
b)
4M
c)
-136 M
d)
24.21 M
e)
-13.2 M
7.
What force is necessary to stretch a spring with a spring constant of 20 N/m by 0.2 m? ________ N
a)
20 N
b)
-20 N
c)
- 4 N
d)
13 N
e)
-13 N
8.
Mothman and Sasquatch are on a see-saw. Mothman is applying a force of 500 N , 1M from the center. If Sasquatch applies 700 N of force to the seesaw, at wat distance does he need to sit to have the see saw balanced? (a) m (include just the number, round to the nearest 100ths place) Example: 0.59
9.
A motorcycle stunt driver zooms off the end of a cliff at 30 m/s. If he lands after 0.75 seconds, what is the height of the cliff?
a)
2.76 M
b)
3.68 M
c)
7.36 M
d)
3.07 M
10.
The landing speed of space shuttle Columbia is 347 km/h. If the shuttle is landing at an angle of 15 ° with respect to the horizon, what is the vertical velocities if we know Vy= v(sin 𝛳) Vy= (a) km/h Include only the number and round to the nearest whole number
11.
The landing speed of space shuttle Columbia is 347 km/h. If the shuttle is landing at an angle of 15 ° with respect to the horizon, what is the horizontal velocity if we know Vx = v(cos 𝛳 ) Vx= (a) km/h Include only the number and round to the nearest whole number
12.
Use the following information to calculate the force of gravity between Earth and the Moon: mass of Earth: 5.97 × 10^24 kg; mass of the Moon: 7.34 × 10^22 kg; distance between Earth’s and the Moon’s centers: 3.84 × 10^8 m
a)
3.21 x 10^15 N
b)
1.99 X 10^20 N
c)
2.45 x 10^33 N
d)
None of the above
13.
When a spring is compressed:
a)
the potential energy stored in the spring decreases.
b)
the spring constant of the spring is decreased.
c)
the spring constant of the spring is increased.
d)
the potential energy stored in the spring increases.
14.
In a simulation Earth has a mass of 1 kg and the sun has a mass of 333,000 kg. The objects are placed 2 meters apart. Use the Universal law of Gravitation to determine the gravitational force between these to objects in the simulation.
a)
-9.25 x 10 ^24 N
b)
5.55 x 10 ^-6 N
c)
2.33 x 10 ^-3 N
d)
5.7 x10 ^ 16 N
e)
We do not have enough information to calculate this simulation.
15.
Ayana applies a 70.0 N force to the handle of a wrench as a distance of 0.350 meters from the center of her bicycle wheel. The amount of torque applied is ________nm
a)
0.005
b)
200
c)
70.35
d)
24.5
16.
The line about which an object turns is called that ____.
a)
torque
b)
axis of rotation
c)
radius
d)
Arm
17.
A force of 2 newtons is required to stretch a spring 40 centimeters. What is the amount of force required to stretch the spring 80 centimeters?
a)
4
b)
0.8
c)
0.1
d)
2
18.
Two separate toy cars are on a scale on opposite sides. The scale is at rotational equilibrium. Toy car1 applies 20 N of force and sits 0.15m away from the center. What amount of force will Toy car2 have to apply if it is 0.2 m from the center?
a)
15N
b)
12 N
c)
15 M
d)
0.0015 M
e)
12 M
19.
A spring with a spring constant of 1000 N/m is used for a scale to weigh fish. What is the mass of a fish that would stretch the spring by 10 cm from its normal length?
________kg
a)
10.2 kg
b)
50 kg
c)
20.13 kg
d)
5.14 kg
e)
2.32 kg
20.
The shape a projectile follows is a _____. The path a projectile follows is known as its ___________. The horizontal distance a projectile travels is called its _______.
a)
Parabola, projectile, range
b)
Parabola, trajectory, y-axis
c)
Range, trajectory, parabola
d)
Revolution, circumference, torque
e)
Parabola, trajectory, range
21.
A stunt driver steers a car off a cliff at a speed of 45.0 m/s. The car lands in a lake below 4.00 s later. Find the horizontal distance the car travels and the height of the cliff.
a)
193.2 m, 83.1m
b)
27m , 124.87 m
c)
165.3m ,54.2 m
d)
180 m, 78.4 m
22.
A car drove off a cliff and landed 50 meters away from the base. The estimated time of the fall was 6 seconds. Determine the vertical velocity and the horizontal velocity of the car before it crashed.
a)
58.8 m/s, 8.8 m/s
b)
176.4 m/s, 10 m/s
c)
176.4 m/s, 50 m/s
d)
300 m/s, 16.6 m/s
e)
8.8 m/s, 16.6 m/s
23.
Which of the following is an example of a projectile?
a)
A bird flying between trees
b)
A jet plane just after take off
c)
A bug landing on a desk
d)
A soccer ball being kicked into the air and then landing on the ground 5 meters away.
24.
Calculate how many degrees a wheel has turned if the wheel goes around twice. (a) degrees *Include only the number in your answer
25.
On a Teeter-Totter, a boy applies 200 N and 2.1m away from the center of the seesaw. How far does the girl need to be sit from the pivot o the other side to make the seesaw balanced, or at rotational equilibrium, if she is 180 N?
a)
2.33 Meters
b)
3.15 Meters
c)
2.51 Newtons
d)
1.22 Newtons
e)
5.22 Newtons
26.
Calculate the radius of a bicycle wheel if the circumference of the wheel is 25.2?
a)
~41.66 m
b)
~2 m
c)
~2pie m
d)
~4 m
27.
What is the angular speed of a bicycle wheel that makes 240 rotations in 6 minutes? (a) RPMs *Include only the number in your answer.
100 %
