Answer:
<h3>The answer is 2800 kg</h3>
Explanation:
The mass of the truck can be found by using the formula

f is the force
a is the acceleration
From the question we have

We have the final answer as
<h3>2800 kg</h3>
Hope this helps you
50N.
The magnitude of the reaction to any force is equal to the magnitude of the first force. (See Newton #3.)
Frequency, υ = 2.09 Hz
We know that time period, T = 1/υ
∴ T = 1 ÷ 2.09
⇒ T = 0.4784 seconds