Kotune said:For (a) I tried s = ut +.5at^2. Hence 45 = 2t+.5(10)t^2 but the answer was not correct.
Nugatory said:That's because you mixed a horizontal speed with a vertical acceleration.
Motion is the change in position of an object over time. It can be described in terms of speed, direction, and acceleration.
Motion can be measured using various units such as meters per second (m/s), kilometers per hour (km/h), or miles per hour (mph). It can also be measured using the displacement, velocity, and acceleration of an object over time.
Speed is the rate at which an object moves, while velocity is the rate of an object's displacement in a specific direction. In other words, velocity takes into account both the speed and direction of an object's motion.
Projectile motion is the motion of an object that is launched or thrown and moves through the air under the force of gravity. It follows a curved path called a parabola.
Air resistance, or drag, can impact the trajectory of a projectile by slowing it down and altering its path. This is especially noticeable for objects with a larger surface area, such as a feather, compared to objects with a smaller surface area, like a bullet.