106.5N
Explanation:
Given parameters:
Mass of cart = 75kg
Velocity = 4.4m/s
time taken = 3.1s
Unknown:
Force = ?
Solution:
To solve this problem, we are going to apply newton's second law of motion. The law states that "the acceleration of a body is directly proportional to the force on the body and inversely proportional to the mass".
F = m x a
F = force on body
m = mass of body
a = acceleration of the body
But we know that acceleration is the change in velocity with time of a body;
a = ![\frac{change in velocity }{time}](https://tex.z-dn.net/?f=%5Cfrac%7Bchange%20in%20velocity%20%7D%7Btime%7D)
F = m x ![\frac{V}{t}](https://tex.z-dn.net/?f=%5Cfrac%7BV%7D%7Bt%7D)
V is the velocity
t is the time taken
F =
= 106.5N
learn more:
Newton's law brainly.com/question/11411375
#learnwithBrainly
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I think the answer is D.) thermometer and graduated cylinder.
My reason for choosing that answer is because none of the other tools would help to measure the speed of water evaporating in different tempts.