Question 1

Which of the following quantities is NOT a vector?

Accepted Answer

A)  Mass 
B)  Displacement 
C)  Weight 
D)  Acceleration 
E)  Force 
A)  Mass 
B)  Displacement 
C)  Weight 
D)  Acceleration 
E)  Force

Question 2

You stand on a spring scaleon the floor of an elevator. Of the following, the scale shows the highest reading when the elevator:

Accepted Answer

A)  moves upward with increasing speed 
B)  moves upward with decreasing speed 
C)  remains stationary 
D)  moves downward with increasing speed 
E)  moves downward at constant speed 
A)  moves upward with increasing speed 
B)  moves upward with decreasing speed 
C)  remains stationary 
D)  moves downward with increasing speed 
E)  moves downward at constant speed

Question 3

The mass and weight of a body:

Accepted Answer

A)  differ by a factor of 9.8 
B)  are identical 
C)  are the same physical quantities expressed in different units 
D)  are both a direct measure of the inertia of the body 
E)  have the same ratio as that of any other body placed at that location 
A)  differ by a factor of 9.8 
B)  are identical 
C)  are the same physical quantities expressed in different units 
D)  are both a direct measure of the inertia of the body 
E)  have the same ratio as that of any other body placed at that location

Question 4

A sled is on an icy (frictionless) slope that is 30   above the horizontal. When a 40-N force, parallel to the incline and directed up the incline, is applied to the sled, the acceleration of the sled is 2.0 m/s2, down the incline.. The mass of the sled is:

Accepted Answer

A)  3.8 kg 
B)  4.1 kg 
C)  5.8 kg 
D)  6.2 kg 
E)  10 kg 
A)  3.8 kg 
B)  4.1 kg 
C)  5.8 kg 
D)  6.2 kg 
E)  10 kg

Question 5

The "reaction" force does not cancel the "action" force because:

Accepted Answer

A)  the action force is greater than the reaction force 
B)  they are on different bodies 
C)  they are in the same direction 
D)  the reaction force exists only after the action force is removed 
E)  the reaction force is greater than the action force 
A)  the action force is greater than the reaction force 
B)  they are on different bodies 
C)  they are in the same direction 
D)  the reaction force exists only after the action force is removed 
E)  the reaction force is greater than the action force

Question 6

When a certain force is applied to the 1-kg standard mass its acceleration is 5.0 m/s2. When the same force is applied to another object its acceleration is one-fifth as much. The mass of the object is:

Accepted Answer

A)  0.2 kg 
B)  0.5 kg 
C)  1.0 kg 
D)  5.0 kg 
E)  10 kg 
A)  0.2 kg 
B)  0.5 kg 
C)  1.0 kg 
D)  5.0 kg 
E)  10 kg

Question 7

A 90-kg man stands in an elevator that has a downward acceleration of 1.4 m/s2. The force exerted by him on the floor is about:

Accepted Answer

A)  zero 
B)  90 N 
C)  760 N 
D)  880 N 
E)  1010 N 
A)  zero 
B)  90 N 
C)  760 N 
D)  880 N 
E)  1010 N

Question 8

Two forces are applied to a 5.0-kg crate; one is 6.0 N to the north and the other is 8.0 N to the west. The magnitude of the acceleration of the crate is:

Accepted Answer

A)  0.50 m/s2 
B)  2.0 m/s2 
C)  2.8 m/s2 
D)  10 m/s2 
E)  50 m/s2 
A)  0.50 m/s2 
B)  2.0 m/s2 
C)  2.8 m/s2 
D)  10 m/s2 
E)  50 m/s2

Question 9

You stand on a spring scale on the floor of an elevator. Of the following, the scale shows the highest reading when the elevator:

Accepted Answer

A)  moves downward with increasing speed 
B)  moves downward with decreasing speed 
C)  remains stationary 
D)  moves upward with decreasing speed 
E)  moves upward at constant speed 
A)  moves downward with increasing speed 
B)  moves downward with decreasing speed 
C)  remains stationary 
D)  moves upward with decreasing speed 
E)  moves upward at constant speed

Question 10

The block shown moves with constant velocity on a horizontal surface. Two of the forces on it are shown. A frictional force exerted by the surface is the only other horizontal force on the block. The frictional force is:

Accepted Answer

A)  0 
B)  2 N, leftward 
C)  2 N, rightward 
D)  slightly more than 2 N, leftward 
E)  slightly less than 2 N, leftward 
A)  0 
B)  2 N, leftward 
C)  2 N, rightward 
D)  slightly more than 2 N, leftward 
E)  slightly less than 2 N, leftward

Question 11

A crate rests on a horizontal surface and a woman pulls on it with a 10-N force. Rank the situations shown below according to the magnitude of the normal force exerted by the surface on the crate, least to greatest.

Accepted Answer

A)  1, 2, 3 
B)  2, 1, 3 
C)  2, 3, 1 
D)  1, 3, 2 
E)  3, 2, 1 
A)  1, 2, 3 
B)  2, 1, 3 
C)  2, 3, 1 
D)  1, 3, 2 
E)  3, 2, 1

Question 12

The inertia of a body tends to cause the body to:

Accepted Answer

A)  speed up 
B)  slow down 
C)  resist any change in its motion 
D)  fall toward the Earth 
E)  decelerate due to friction 
A)  speed up 
B)  slow down 
C)  resist any change in its motion 
D)  fall toward the Earth 
E)  decelerate due to friction

Question 13

The standard 1-kg mass is attached to a compressed spring and the spring is released. If the mass initially has an acceleration of 5.6 m/s2, the force of the spring has a magnitude of:

Accepted Answer

A)  2.8 N 
B)  5.6 N 
C)  11.2 N 
D)  0 
E)  an undetermined amount 
A)  2.8 N 
B)  5.6 N 
C)  11.2 N 
D)  0 
E)  an undetermined amount

Question 14

A force of 1 N is:

Accepted Answer

A)  1 kg/s 
B)  1kg . m/s 
C)  1kg . m/s2 
D)  1kg. m2/s 
E)  1kg . m2/s2 
A)  1 kg/s 
B)  1kg . m/s 
C)  1kg . m/s2 
D)  1kg. m2/s 
E)  1kg . m2/s2

Question 15

Mass differs from weight in that:

Accepted Answer

A)  all objects have weight but some lack mass 
B)  weight is a force and mass is not 
C)  the mass of an object is always more than its weight 
D)  mass can only be expressed in the metric system 
E)  there is no difference 
A)  all objects have weight but some lack mass 
B)  weight is a force and mass is not 
C)  the mass of an object is always more than its weight 
D)  mass can only be expressed in the metric system 
E)  there is no difference

Question 16

Three books (X, Y, and Z) rest on a table. The weight of each book is indicated. The force of book Z on book Y is:

Accepted Answer

A)  0 
B)  5 N 
C)  9 N 
D)  14 N 
E)  19 N 
A)  0 
B)  5 N 
C)  9 N 
D)  14 N 
E)  19 N

Question 17

A 5-kg concrete block is lowered with a downward acceleration of 2.8 m/s2 by means of a rope. The force of the block on the Earth is:

Accepted Answer

A)  14 N, up 
B)  14 N, down 
C)  35 N, up 
D)  35 N, down 
E)  49 N, up 
A)  14 N, up 
B)  14 N, down 
C)  35 N, up 
D)  35 N, down 
E)  49 N, up

Question 18

A 5-kg concrete block is lowered with a downward acceleration of 2.8 m/s2 by means of a rope. The force of the block on the rope is:

Accepted Answer

A)  14 N, up 
B)  14 N, down 
C)  35 N, up 
D)  35 N, down 
E)  49 N, up 
A)  14 N, up 
B)  14 N, down 
C)  35 N, up 
D)  35 N, down 
E)  49 N, up

Question 19

The unit of force called the newton is:

Accepted Answer

A)  9.8 kg .m/s2 
B)  1 kg . m/s2 
C)  defined by means of Newton's third law 
D)  1 kg of mass 
E)  1 kg of force 
A)  9.8 kg .m/s2 
B)  1 kg . m/s2 
C)  defined by means of Newton's third law 
D)  1 kg of mass 
E)  1 kg of force

Question 20

A 70-N block and an 35-N block are connected by a string as shown. If the pulley is massless and the surface is frictionless, the magnitude of the acceleration of the 35-N block is:

Accepted Answer

A)  1.6 m/s2 
B)  3.3 m/s2 
C)  4.9 m/s2 
D)  6.7 m/s2 
E)  9.8 m/s2 
A)  1.6 m/s2 
B)  3.3 m/s2 
C)  4.9 m/s2 
D)  6.7 m/s2 
E)  9.8 m/s2

Exam 5: Force and Motion I

Which of the following quantities is NOT a vector?

You stand on a spring scaleon the floor of an elevator. Of the following, the scale shows the highest reading when the elevator:

The mass and weight of a body:

A sled is on an icy (frictionless) slope that is 30 above the horizontal. When a 40-N force, parallel to the incline and directed up the incline, is applied to the sled, the acceleration of the sled is 2.0 m/s2, down the incline.. The mass of the sled is:

The "reaction" force does not cancel the "action" force because:

When a certain force is applied to the 1-kg standard mass its acceleration is 5.0 m/s2. When the same force is applied to another object its acceleration is one-fifth as much. The mass of the object is:

A 90-kg man stands in an elevator that has a downward acceleration of 1.4 m/s2. The force exerted by him on the floor is about:

Two forces are applied to a 5.0-kg crate; one is 6.0 N to the north and the other is 8.0 N to the west. The magnitude of the acceleration of the crate is:

You stand on a spring scale on the floor of an elevator. Of the following, the scale shows the highest reading when the elevator:

The block shown moves with constant velocity on a horizontal surface. Two of the forces on it are shown. A frictional force exerted by the surface is the only other horizontal force on the block. The frictional force is:

A crate rests on a horizontal surface and a woman pulls on it with a 10-N force. Rank the situations shown below according to the magnitude of the normal force exerted by the surface on the crate, least to greatest.

The inertia of a body tends to cause the body to:

The standard 1-kg mass is attached to a compressed spring and the spring is released. If the mass initially has an acceleration of 5.6 m/s2, the force of the spring has a magnitude of:

A force of 1 N is:

Mass differs from weight in that:

Three books (X, Y, and Z) rest on a table. The weight of each book is indicated. The force of book Z on book Y is:

A 5-kg concrete block is lowered with a downward acceleration of 2.8 m/s2 by means of a rope. The force of the block on the Earth is:

A 5-kg concrete block is lowered with a downward acceleration of 2.8 m/s2 by means of a rope. The force of the block on the rope is:

The unit of force called the newton is:

A 70-N block and an 35-N block are connected by a string as shown. If the pulley is massless and the surface is frictionless, the magnitude of the acceleration of the 35-N block is:

Measurement

Motion Along a Straight Line

Vector

Motion in Two and Three Dimensions

Force and Motion II

Kinetic Energy and Work

Potential Energy and Conservation of Energy

Center of Mass and Linear Momentum

Rotation

Rolling, Torque, and Angular Momentum

Equilibrium and Elasticity

Gravitation

Fluids

Oscillations

Waves I

Waves II

Temperature, Heat, and the First Law of Thermodynamics

The Kinetic Theory of Gases

Entropy and the Second Law of Thermodynamics

Electric Charge

Electric Fields

Gauss Law

Electric Potential

Capacitance

Current and Resistance

Circuits

Magnetic Fields

Magnetic Fields Due to Currents

Induction and Inductance

Electromagnetic Oscillations and Alternating Current

Maxwells Equations; Magnetism of Matter

Electromagnetic Waves

Images

Interference

Diffraction

Relativity

Photons and Matter Waves

More About Matter Waves

All About Atoms

Conduction of Electricity in Solids

Nuclear Physics

Energy From the Nucleus

Quarks, Leptons, and the Big Bang

Filters

A sled is on an icy (frictionless) slope that is 30 above the horizontal. When a 40-N force, parallel to the incline and directed up the incline, is applied to the sled, the acceleration of the sled is 2.0 m/s², down the incline.. The mass of the sled is:

When a certain force is applied to the 1-kg standard mass its acceleration is 5.0 m/s². When the same force is applied to another object its acceleration is one-fifth as much. The mass of the object is:

A 90-kg man stands in an elevator that has a downward acceleration of 1.4 m/s². The force exerted by him on the floor is about:

The standard 1-kg mass is attached to a compressed spring and the spring is released. If the mass initially has an acceleration of 5.6 m/s², the force of the spring has a magnitude of:

A 5-kg concrete block is lowered with a downward acceleration of 2.8 m/s² by means of a rope. The force of the block on the Earth is:

A 5-kg concrete block is lowered with a downward acceleration of 2.8 m/s² by means of a rope. The force of the block on the rope is: