Question

1. which of the following is not referenced in newtons second law of motion?

a. force
b. mass
c. type of object
d. acceleration

1. newtons second law of motion says that objects of greater mass:

a. require greater force in order to accelerate
b. also weigh more
c. generate greater forces
d. have virtually no effect on other objects

1. the word acceleration describes:

a. a change in mass
b. a change in direction
c. a change in speed
d. a change in velocity

1. what does it mean that acceleration is a vector?

a. it has one quality: speed
b. it has one quality: mass
c. it has two qualities: speed and direction
d. it has two qualities: mass and direction

1. what happens when a constant net force acts on an object?

a. the object slows down at a constant rate
b. the object accelerates at a constant rate
c. the object stops moving
d. the object stops moving

Explanation:

1. Newton's Second Law is \( F = ma \) (force = mass × acceleration). It does not reference the type of object.
2. From \( F = ma \), for a given acceleration \( a \), a greater mass \( m \) requires a greater force \( F \).
3. Acceleration is defined as the rate of change of velocity (\( a=\frac{\Delta v}{\Delta t} \)).
4. A vector has both magnitude (speed - related) and direction.
5. Using \( F = ma \), if \( F\) (net force) is constant and \( m\) (mass, assumed constant for a given object) is constant, then \( a\) (acceleration) is constant.

Answer:

1. C. type of object
2. A. require greater force in order to accelerate
3. D. a change in velocity
4. C. it has two qualities: speed and direction
5. B. the object accelerates at a constant rate