Newton’s Laws

Forces and Motion

A force that is applied by gravity to an object

A. Normal Force

B. Weight

C. Natural Force

D. Friction

E. Tension

F. None of These

[Default][MC Any][MC All]

Any force applied to an object by a surface

A. Tension

B. Weight

C. Normal force

D. Balanced force

E. None of These

[Default][MC Any][MC All]

A force that is applied to an object through a string, rope, or chain is called…

A. Friction

B. Natural Force

C. Normal Force

D. Net Force

E. Tension

F. None of these

[Default][MC Any][MC All]

A force that resists the motion of an object is called…

A. Natural force

B. Friction

C. Weight

D. Normal Force

E. Applied Force

F. None of these[Default][MC Any][MC All]

Which direction does weight act?

A. To the right

B. To the left

C. North

D. South

E. Up

F. Down

G. At some angle to the horizontal[Default][MC Any][MC All]

What direction does the friction force act?

A. Perpendicular to the surface in the same direction as the motion.

B. Parallel to the surface in the same direction as the motion.

C. Perpendicular to the surface in the opposite direction of the motion.

D. Parallel to the surface in the opposite direction of the motion.

E. At some angle to the surface not related to the motion.

What direction does the Normal force act?

A. Perpendicular to the surface pointing toward the surface.

B. Perpendicular to the surface pointing away from the surface.

C. Parallel to the surface pointing in the direction of motion.

D. Parallel to the surface pointing opposite the direction of motion.

E. At some angle to the surface unrelated to the motion.

Net force can be calculated which of the following ways. (Choose all that apply.)

A. Adding all of the force magnitudes together

B. Adding all of the force vectors together

C. Multiplying mass times acceleration

D. Multiplying mass times velocity

E. Dividing mass by acceleration

F. Dividing mass by velocity

Friction depends on what factors?

Choose all that apply.

A. Weight

B. Normal force

C. Applied force

D. Surface textures

E. Surface Area

F. None of these

Newton’s 1st Law is best summarized as…

A. Action-Reaction

B. Unbalanced Forces

C. Inertia

D. Gravity

E. None of these

Newton’s 3rd Law can be best summarized as …

A. Action-Reaction

B. Unbalanced Forces

C. Inertia

D. Gravity

E. None of these

What quantity ties forces acting on an object and the motion of the object together?

A. Velocity

B. Net force

C. Normal force

D. Mass

E. Acceleration

What happens to the acceleration of a given object if the Net Force acting on it is doubled?

A. Stays the same

B. Double the original

C. Quadruple the original

D. Becomes half of the original

E. Becomes one-quarter of the original

What happens to the acceleration if the Force remains constant and the mass is doubled?

A. Stays the sameB. Double the original

C. Quadruple the originalD. Becomes half of the originalE. Becomes one-quarter of the original

If Action-Reaction force pairs are equal and opposite, are they balanced forces?

A. Yes, they cancel each other out

B. No, because they are acting on different objects

C. The answer depends on the specific problem

An object has a mass of 65 grams on Earth. How much mass does it have on the moon? (g=1.6 m/s2)

A. 0.104 g

B. 0.638 g

C. 6.63 g

D. 40.6 g

E. 65 g

F. 104 g

G. 638 g

An object has a mass of 65 grams on Earth. How much does it weigh?

A. 0.104 NB. 0.638 N

C. 6.63 N

D. 40.6 N

E. 65 N

F. 104 N

G. 638 N

An object has a mass of 65 grams on Earth. How much does it weigh on the moon? (g=1.6 m/s2)

A. 0.104 N

B. 0.638 N

C. 6.63 N

D. 40.6 N

E. 65 N

F. 104 N

G. 638 N

Which statements below are true if an object is said to be in “equilibrium”? (Choose all that apply)

A. All of the horizontal forces are balanced

B. All of the vertical forces are balanced

C. Horizontal forces are balanced, but vertical forces are not balanced

D. Vertical forces are balanced, but horizontal forces are not balanced

E. Net Force is zeroF. None of these are true statements

A 6 kg bowling ball is given an acceleration of

2 m/s2. How much force was required?

A. 2 N

B. 3 N

C. 6 N

D. 9.81 N

E. 12 N

F. None of these

A large dog weighs 400 N. What is the mass of the dog?

A. 9.81 kg

B. 40.77 kg

C. 400 kg

D. 3924 kg

E. None of these

What is the Net Force on a 20N stone if

you apply an upward force of 27 N on it? A. 0 NB. 7 N, upC. 7 N, downD. 20 N, upE. 20 N, downF. 27 N, upG. 27 N, downH. 47 N, upI. 47 N, downJ. None of these

What is the acceleration on a 20N stone if you apply an upward force of 27 N on it?

A. 0 m/s2

B. 2.04 m/s2

C. 2.54 m/s2

D. 2.75 m/s2

E. 3.43 m/s2

F. None of these

A race car with a mass of 1000 kg starts from rest and travels 60 m in 4 second. What Net Force is applied to the car?

A. 0 N

B. 7.5 N

C. 133 N

D. 7500 N

E. None of these

A. 0 N

B. 1.5 N

C. 35 N

D. 51.5 N

E. 147 N

F. None of these[Default][MC Any][MC All]

A 15 kg crate is pushed across a level floor by an applied force of 100 N. If the coefficient of friction between the crate and the floor is 0.35, what is the normal force acting on the crate?

Hint: Draw the force diagram!

15 kg

A 15 kg crate is pushed across a level floor by an applied force of 100 N. If the coefficient of friction between the crate and the floor is 0.35, what is the force of friction acting on the crate?

A. 0 N

B. 15 N

C. 35 N

D. 51.5 N

E. 147 N

F. None of these

Hint: Draw the force diagram!

15 kg

A 15 kg crate is pushed across a level floor by an applied force of 100 N. If the coefficient of friction between the crate and the floor is 0.35, what is the vertical net force acting on the crate?

A. 0 N

B. 35 N

C. 48.5 N

D. 51.5 N

E. 147 N

Hint: Draw the force diagram!

15 kg

A 15 kg crate is pushed across a level floor by an applied force of 100 N. If the coefficient of friction between the crate and the floor is 0.35, what is the horizontal net force acting on the crate?

A. 0 N

B. 35 N

C. 48.5 N

D. 51.5 N

E. 147 N

Hint: Draw the force diagram!

15 kg

A 15 kg crate is pushed across a level floor by an applied force of 100 N. If the coefficient of friction between the crate and the floor is 0.35, what is the acceleration on the crate?

A. 0 m/s2

B. 0.33 m/s2

C. 3.23 m/s2

D. 3.43 m/s2

E. 9.81 m/s2

Hint: Draw the force diagram!

15 kg