40 Questions
| Total Attempts: 347

Questions and Answers

- 1.Accelerations are produced by
- A.
Forces

- B.
Velocities

- C.
Accelerations

- D.
Masses

- E.
None of the above

- 2.A book weighs 2 N. When held at rest in your hands, the net force on the book is
- A.
0.2 N

- B.
2 N

- C.
0 N

- D.
45 N

- E.
None of the above

- 3.An object has a constant mass. A constant force on the object produces constant
- A.
Velocity

- B.
Acceleration

- C.
Both A and B

- D.
None of the above

- 4.Statics is the study of forces in
- A.
Acceleration

- B.
Motion

- C.
Equilibrium

- D.
Space

- E.
None of the above

- 5.If you need to find the angle and you know the opposite side and the adjacent side you use the
- A.
Cosine rule

- B.
Sine rule

- C.
Tangent rule

- D.
Jedi rule

- E.
None of the above

- 6.A vector is a quantity that has
- A.
Magnitude and direction

- B.
Time and direction

- C.
Magnitude and time

- D.
All of the above

- 7.Which is the resultant vector from a 7 unit vector in the same direction as a 5 unit vector?
- A.
12 units

- B.
2 units

- C.
24 units

- D.
42 units

- E.
4 units

- 8.When forces acting on an object are balanced, which characteristic of motion is zero?
- A.
Acceleration

- B.
Displacement

- C.
Speed

- D.
Velocity

- 9.A 20 N physics textbook rests on a table. What is the force the table exerts on the textbook?
- A.
0 N

- B.
9.80 N

- C.
20.0 N

- D.
40.0 N

- 10.
- A.
It continues to accelerate.

- B.
It moves with a constant speed.

- C.
It moves with increasing speed, then the speed gradually decreases.

- D.
It gradually decreases speed.

- 11.A 45 kg object is given a net force of 500 N. What is its acceleration?
- A.
4.5 m/s/s

- B.
6.5 m/s/s

- C.
11 m/s/s

- D.
45 m/s/s

- 12.A student is sitting at rest in a chair. How does the force that the student exerts on the chair compare to the force the chair exerts on the student?
- A.
The same magnitude and the same direction

- B.
The same magnitude but the opposite direction

- C.
A larger magnitude but the opposite direction

- D.
A smaller magnitude but the same direction

- 13.A student weighs 200 N. If he is in an elevator that is accelerating upward at 2.00 m/s/s, what will be his weight?
- A.
159 N

- B.
200 N

- C.
241 N

- D.
400 N

- 14.Wes hits a softball with a bat. What is the force exerted on the softball by the bat?
- A.
Equal in both size and direction to the force exerted onh the bat by the softball

- B.
Equal in size but opposite in direction to the force exerted on the bat by the softball

- C.
Opposite in direction but much smaller than the force exerted on the bat by the softball

- D.
Opposite in direction but much larger than the force exerted on the bat by the softball

- 15.Tyler is driving a pickup truck North on I-40 at 20 m/s. Tyler suddenly stops the truck. In which direction will Jade who is lying in the center of the frictionless truck bed move?
- A.
East

- B.
West

- C.
South

- D.
North

- 16.A 46 kg rigid box is at rest on a horizontal floor. A 22 kg child sits on top of the box. A person pushes horizontally on the box with a force of 90 N. The force of static friction between the box and the floor is 230 N. What is the magnitude of the net force on the box?
- A.
0 N

- B.
140 N

- C.
670 N

- D.
990 N

- 17.At a certain distance from the center of Earth, a satellite experiences a gravitational force, F. If the mass of the satellite was doubled and placed into the same orbit, what gravitational force would the satellite have acting on it?
- A.
4F

- B.
2F

- C.
F/2

- D.
F/4

- 18.The force that is exerted by a rope or wire or any object that pulls on another is the
- A.
X

- B.
Y

- C.
Jedi

- D.
Equilibrium

- E.
Tension

- 19.A student walks 160 m in 150 s. The student stops for 30 s and then walks 210 m farther in 140 s. What is the average speed of the entire walk?
- A.
0.53 m/s

- B.
0.80 m/s

- C.
1.2 m/s

- D.
1.3 m/s

- 20.An airplane went from 120 m/s to 180 m/s in 4.0 seconds. What was its acceleration?
- A.
15 m/s/s

- B.
30 m/s/s

- C.
45 m/s/s

- D.
60 m/s/s

- 21.There is a picture of Mona Lisa hanging from Shantales' wall. If the tension force is 30 N and the angle it makes to the horizontal is 45', what is the weight of the picture?
- A.
38 N

- B.
40 N

- C.
30.9 N

- D.
42.3 N

- 22.After returning home from the day at the beach, Chelsea hangs her wet bathing suit .20 kg in the center of the 6.0 m clothesline to dry. This causes the clothesline to sag 4.0 cm. What is the tension in the clothesline?
- A.
60 N

- B.
75 N

- C.
77 N

- D.
80 N

- 23.Whenever an object hangs from wires, the sum of the vertical components of the tension in each wire is equal to the objects'
- A.
Mass

- B.
Velocity

- C.
Weight

- D.
Speed

- 24.A ball is thrown straight up. What will be the instantaneous velocity at the top of its path?
- A.
2 m/s

- B.
0 m/s

- C.
5 m/s

- D.
3 m/s

- 25.A ball is thrown straight up. What will be the acceleration at the top of its path?
- A.
0 m/s/s

- B.
2 m/s/s

- C.
9.8 m/s/s

- D.
20 m/s/s