The object velocity is 282.4
These two forces are called action and reaction forces and are the subject of Newton's third law of motion.
<em>Have a luvely day!</em>
She threw the marshmallow at a speed of around 4.76 m/s.The formula for the horizontal range gives the velocity.
<h3>What is projectile motion?</h3>
The motion of an item hurled or projected into the air, subject only to gravity's acceleration, is known as projectile motion.
The item is known as a projectile, and the course it takes is known as a trajectory. Falling object motion is a simple one-dimensional kind of projectile motion with no horizontal movement.
Given data;
The marshmallow was thrown at a distance of 2 meters
Range,R = 3 m
Initial velocity,u
The angle at which the marshmallow was thrown,θ = 30°
The acceleration due to gravity,g = 9.81 m/s²
The projectile's motion is divided into two parts: horizontal and vertical motion.
![\rm R = \frac{u^2sin2 \theta }{g} \\\\ \rm R = \frac{u^2sin2 \times (30) }{9.81} \\\\ u^2=\frac{2 \times 9.81 }{sin 60^0} \\\\ u^2=22.66 \\\\ u=4.76 \ m/sec](https://tex.z-dn.net/?f=%5Crm%20R%20%3D%20%5Cfrac%7Bu%5E2sin2%20%5Ctheta%20%7D%7Bg%7D%20%5C%5C%5C%5C%20%5Crm%20R%20%20%3D%20%5Cfrac%7Bu%5E2sin2%20%5Ctimes%20%2830%29%20%7D%7B9.81%7D%20%5C%5C%5C%5C%20u%5E2%3D%5Cfrac%7B2%20%5Ctimes%209.81%20%7D%7Bsin%2060%5E0%7D%20%5C%5C%5C%5C%20u%5E2%3D22.66%20%5C%5C%5C%5C%20u%3D4.76%20%5C%20m%2Fsec)
Hence, she throws the marshmallow at a speed of 4.76 m/sec.
To learn more about the projectile motion refer to the link;
brainly.com/question/11049671
#SPJ1
<span>(symbol K)</span><span> Energy that an object possesses because it is in motion. It is the energy given to an object to set it in motion; it depends on the mass (</span>m) of the object and its velocity (v<span>), according to the equation K = 1/2 </span>mv2<span>. On impact, it is converted into other forms of energy such as heat, sound and light.</span>