davie08 said:ya I drew the diagram what's the first equation that I use?
davie08 said:so is it 20=3.0*a
davie08 said:is Fg 29.4 and I forgot but doesn't Fg=F with the perpendicular and you seem like a pretty good person helping everyone out thanks for the help.
davie08 said:im missing the force of friction right but I got it form Ff=.25*29.4 and it equaled 7.35 is this right?
davie08 said:if I add 6.67 and 7.35 with the eqn. Fn=Fa+Ff I get 14 but the answer is 13.
well does the direction matter
davie08 said:I got 6.67 from 20=3*a but I guess that's wrong right but was the 7.35 right I am not sure what you mean by what direction like the friction is going against the applied force if that what you mean
Force is a physical quantity that can cause a change in the motion of an object. In the context of free fall projectiles, force plays a crucial role in determining the trajectory and speed of the object. The force of gravity, which is a constant acceleration of 9.8 m/s^2, is the main force acting on an object in free fall and is responsible for the downward motion of the projectile.
The mass of a projectile does not affect its free fall. This is because the force of gravity acts on all objects equally, regardless of their mass. This is known as the principle of equivalence and is a fundamental law of physics. Therefore, in a vacuum, all objects will fall at the same rate regardless of their mass.
Velocity is a vector quantity that describes the speed and direction of an object's motion. In free fall projectiles, the velocity of the object increases as it falls due to the constant acceleration of gravity. Acceleration, on the other hand, is a measure of how much an object's velocity changes over time. In free fall, the acceleration remains constant at 9.8 m/s^2, causing the object to increase its velocity by 9.8 m/s every second.
The maximum height and range of a projectile can be calculated using the equations of motion. The maximum height can be determined by using the formula h = v^2 sin^2(theta) / 2g, where v is the initial velocity, theta is the angle of projection, and g is the acceleration due to gravity. The range can be calculated using the formula R = v^2 sin(2theta) / g.
Air resistance, also known as drag, is a force that opposes the motion of an object through air. In the case of free fall projectiles, air resistance plays a minor role in the motion of the object. This is because, in the absence of air resistance, all objects would fall at the same rate due to the force of gravity. However, in real-life scenarios, air resistance can affect the trajectory and speed of a projectile, especially at higher velocities.