Answer:No
Explanation:
No
As the train is accelerating so train velocity will be more as compared to the ball and thus will cover more distance as compared to the ball.
When the ball is thrown upward with some velocity, it also possesses the train velocity at the time of throwing but as time passes velocity of train increases due to acceleration of the train. This causes the ball to fall behind the point of launch.
Answer:
The ball takes 
to hit the ground.
Explanation:
• The second equation of motion represents the total distances travelled by an object in a time interval of 
with an initial speed of 
and acceleration 
.
• To find the time, ball takes to hit the ground, use the formula: 
Where, 
is time, is initial velocity, is acceleration and
is displacement.
• In this case, 
.
• Placing the value of the given initial velocity, 
and displacement,
in the above formula.
![& \Rightarrow 13 = 4 \cdot 9{t^2} \\& \Rightarrow {t^2} = \frac{{13}}{{4.9}} \\& \Rightarrow t = 1 \cdot 917sec \\\end{align}\]](https://tex.z-dn.net/?f=%26%20%20%5CRightarrow%2013%20%3D%204%20%5Ccdot%209%7Bt%5E2%7D%20%20%5C%5C%26%20%20%5CRightarrow%20%7Bt%5E2%7D%20%3D%20%5Cfrac%7B%7B13%7D%7D%7B%7B4.9%7D%7D%20%20%5C%5C%26%20%20%5CRightarrow%20t%20%3D%201%20%5Ccdot%20917sec%20%5C%5C%5Cend%7Balign%7D%5C%5D)
• Hence, ball takes to hit the ground.
Learn more about second equation of motion here:
brainly.com/question/19030143
Answer:
C. 0.50 m
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Answer:
Mass and velocity.
Explanation:
Kinetic energy <u>is the energy that an object has due to its movement</u>, mathematically it is represented as follows:
where 
is the mass of the object, and 
is its velocity at a given point in time.
So we can see that to find the kinetic energy just before the ball hits the gound, we need the quantities:
- mass of the ball
- velocity of the ball before it hits the ground
With the knowledge of these two quantities the kinetic energy of the ball before touching the gound can be determined.
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