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
Answer:
F = 0.075 N
Explanation:
given,
diameter of ping pong ball = 2.55 cm
average density of the ball = 0.116 g/cm³
Force require to hold the ball completely submerged= ?
Volume of the ball


V = 8.63 cm³
density of water = 1 g/cm³
force required to keep the ball submerged is equal to


F = 7.63 x 9.8 x 10⁻³
F = 0.075 N
Force required to keep the ball inside the water is equal to 0.075 N
The amount of work done by the force of gravity on the ball is 4.41 Joules.
<u>Given the following data:</u>
- Displacement = 2.5 meters.
<u>Scientific data:</u>
- Acceleration due to gravity = 9.8
.
To calculate the amount of work done by the force of gravity on the ball:
<h3>How to calculate work done.</h3>
In Science, work done is calculated by multiplying force and the height or displacement experienced by an object.
Mathematically, work done is given by the formula:

Substituting the given parameters into the formula, we have;

Work done = 4.41 Joules.
Read more on work done here: brainly.com/question/22599382
This is a perfect problem to use positive and negative velocities.
Let's call the positive direction the direction that points UP.
Then the negative direction is the one that points down.
The acceleration of gravity on Earth is 9.8 m/s² down. That means
that any object with no forces on it except gravity gains 9.8 m/s of
speed downward every second.
OK. Ready to go to work:
The ball's initial velocity is +(up)20.0 m/s .
Every second after the toss, the ball has -(down)9.8 m/s more velocity.
The ball's velocity after 3 seconds is
+20 + 3(-9.8) =
20 - 29.4 = - 9.4 m/s .
That means it's velocity at that time is 9.4 m/s pointing down.