Physics, 5 questions

Question

1. The force of a surface pushing back on an object is called the _____ force?

a. gravity

b. normal

c. tension

d. friction

2. the force of a rope, string, or similar object pulling on an object is called the ____ force

a. gravity

b.normal

c.tension

d. friction

in this example vectors are forces, if one force is 5N (newtons) facing up and another force is 5N facing to the right, in what direction would the final force be?

a. up and to the right

b. down and to the right

c. up and to the left

d. down and to the left

e. just up

f. just down

g. just left

h. just right

i. Nowhere (no net force)

if one force is 5n facing up, and another force 5N facing down, in what direction would the final force be?

a. up and to the right

b. down and to the right

c. up and to the left

d. down and to the left

e. just up

f. just down

g. just left

h. just right

i. Nowhere (no net force)



if one force is 5n facing up and another force is 4N facing down, in what direction would the final force be

a. up and to the right

b. down and to the right

c. up and to the left

d. down and to the left

e. just up

f. just down

g. just left

h. just right

i. Nowhere (no net force)

Answer 1

1. Normal. Normal force is always perpendicular to the surface the object touches and depends on how hard they're pressed against each other.
2. Tension. Tension is any pulling, contact force.
3. A. Add all vectors to determine net force. Adding two vectors up and right will result in a northeast diagonal vector.
4. i. The upward and downward forces are equal in magnitude, but opposite directions so they "cancel" each other out.
5. e. The two vectors are not equal, and if up was positive (so downward has to be negative), the net force by adding the vectors would be 5N - 4N = 1N upward.