Question

Which of the following is the cause of an acceleration or a change in an object’s motion?
a
force
b
speed
c
velocity
d
inertia
Question 20 (1 point)
Which of the following forces arises from direct physical contact between two objects?
a
contact force
b
gravitational force
c
fundamental force
d
field force

Answer 1

For your first question regarding the cause of acceleration or a change in an object’s motion, the correct answer is:

**a. force**

For your second question regarding the type of force that arises from direct physical contact between two objects, the correct answer is:

**a. contact force**