Answer:
The distance between knothole and the paint ball is 0.483 m.
Explanation:
Given that,
Height = 4.0 m
Distance = 15 m
Speed = 50 m/s
The angle at which the forester aims his gun are,
Using the equation of motion of the trajectory
The horizontal displacement of the paint ball is
Using the equation of motion of the trajectory
The vertical displacement of the paint ball is
Put the value into the formula
We need to calculate the distance between knothole and the paint ball
Hence, The distance between knothole and the paint ball is 0.483 m.
Answer:
Digital thermometers.
Electronic ear thermometers.
Forehead thermometers.
Explanation:
Answer:
5m/s²
Explanation:
Given parameters:
Mass of wagon = 10kg
Force of pull = 70N
Frictional force = 20N
Unknown:
Acceleration of the wagon = ?
Solution:
Frictional force is a force that opposes motion.
The net force is given as:
Net force = mass x acceleration
Force of pull - Frictional force = mass x acceleration
Insert the parameters and solve;
70 - 20 = 10 x acceleration
50 = 10 x acceleration
Acceleration = 5m/s²
The Newton's second law of motion can be used to determine the why certain players are used certain positions because each player has unique mass and as such exert a unique force.
<h3>
What is Newton's second law?</h3>
Newton's second law of motion states that the force applied to an object is directly proportional to the mass and acceleration of the object.
F = ma
where;
- m is mass of the object
- a is acceleration of the object
Based on Newton's second law of motion, the force exerted by an object increases with increase in the mass of an object.
For example, most defenders in sports usually have large mass which increases the force exert on the opposing team.
Thus, the Newton's second law of motion can be used to determine the why certain players are used certain positions because each player has unique mass and as such exert a unique force.
Learn more about Newton's second law of motion here: brainly.com/question/25545050
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