Question

motion and forces unit exam
first & last name
b
+ you must write your answer on the line in capital letters.

1. the relationship between pressure, force, and area is pressure = force/area, also pa = n/m². if the pressure of a fluid is 20 pa, the area measured is 100 m², what is the force exerted by the fluid? show your work here:

a. 2 n
c. 200 n
b. 2,000 n
d. 20 n

1. an experimenter records data for the speed and time of rolling carts traveling along a track. the table shows the data for four trials. use this table for questions 2 - 3.

in which trial did the cart experience the greatest average acceleration?
a. trial 2
c. trial 4
b. trial 3
d. trial 1

1. in which trial did the cart experience centripetal acceleration?

a. trial 1
c. trial 3
e. none of these
b. trial 2
d. trial 4
f. all of these

1. montez read that bobcats can reach speeds of up to 30 mi/h. what does the speed of a bobcat indicate?

e. the time it takes to reach its maximum speed
f. the total amount of time it travels in one direction
g. the distance it travels to move between two points
h. the distance it can travel in a certain amount of time

Explanation:

Step1: Rearrange the pressure formula

Given \(P=\frac{F}{A}\), we can solve for \(F\) by multiplying both sides of the equation by \(A\). So \(F = P\times A\).

Step2: Substitute the values

We know that \(P = 20\space Pa\) and \(A=100\space m^{2}\). Substituting these values into the formula \(F = P\times A\), we get \(F=20\times100\).

Step3: Calculate the force

\(20\times100 = 2000\space N\)

Answer:

B. 2,000 N