- Apparatus 1 Ballistic Launcher 1 Metal Ball 1 Meter Stick 1 Marker 1 Inclined Plane 1 Protractor Theory A Project 1 (147.12 KiB) Viewed 59 times
- Apparatus 1 Ballistic Launcher 1 Metal Ball 1 Meter Stick 1 Marker 1 Inclined Plane 1 Protractor Theory A Project 2 (120.29 KiB) Viewed 59 times
- Apparatus 1 Ballistic Launcher 1 Metal Ball 1 Meter Stick 1 Marker 1 Inclined Plane 1 Protractor Theory A Project 3 (78.51 KiB) Viewed 59 times
ps. that's all the questions given to us.
APPARATUS: 1 ballistic launcher, 1 metal ball, 1 meter stick, 1 marker, 1 inclined plane, 1 protractor THEORY: A projectile is a body launch into space with an initial velocity and allowed to move freely under the influence of gravity. There are two types of projectiles. The first one is the horizontal projection and the other one is a projectile launch at an angle with the horizontal. The projectile has two types of component velocities, the horizontal velocity, Vx and the vertical velocity, Vy. In horizontal projection, there is no initial vertical velocity, Vyo = 0 while the horizontal velocity is constant. In a projectile launch at an angle with the horizontal, there is initial vertical velocity because the body cannot move without initial velocity and the horizontal velocity is constant. At the topmost of the flight the vertical velocity is zero, because the body temporarily stops before 12 = 2 2 = = it moves gradually downward. It is understood that the acceleration if the body is moving up is negative while if it goes down it is positive. The acceleration due to gravity is always considered in projectile motion. The formulas to be used: Vj = V0 + at or Vfx = Vxo + at or Vfy = Vyo + gt V2 = V.2 + 2as or Vfx² = Vxo? + 2ax or Vry? = Vyo? + 2aY Vx = V.cosé Vy = V sino at2 1 1 S = V.t + ve sin20 X = Vxo + Y = 2 X = : Vyot 2gt2 Vs = final velocity Vfx = final horizontal velocity Vfy = final vertical velocity Vo = initial velocity Vxo = initial horizontal velocity Vx = horizontal velocity Vyo = initial vertical velocity Vy = vertical velocity S = displacement X = range Y = height a = horizontal acceleration g = acceleration due to gravity t+ 2at2 g =
PROCEDURES: A. Horizontal Projection 1. Mount the ballistic launcher at the corner and end of the table. All chairs should be removed for the safe trajectory of the projectile. Prepare the ballistic launcher in the releasing mood and place the metal ball at the tip of the barrel. Measure the height from the floor up to the tip of the barrel, this is the height of the projectile. 2. Carefully release the trigger and watch out where the metal ball fall. Measure the distance or range, from the base of the floor to where the ball fells. 3. Compute the time of the flight and initial velocity of the ball using the formulas shown. 4. Do this for three trials. 5. Draw the experimental setup. B. Projection at an Angle with the Horizontal 1. Mount the ballistic launcher at the end of the table, Insert an inclined plane for a desired angle. 2. Prepare to release the trigger while the ball is in the barrel. 3. Release the trigger find out where the ball fells. Measure the range using the meter stick. 13 4. In comparison, compute for the range using the formula, X = V.? since g 5. Compute for the percentage error. 6. Draw the experimental setup. SETUP A SETUP B
DATA RESULTS: A. Horizontal Projection Trials Height, Y (cm) Range, X (cm) Time, t (sec) Initial Velocity, Vo cm/sec 1 2 3 Average COMPUTATIONS: B. Projection at an Angle with the Horizontal Trials % error Range (actual) Range (computed) cm cm 1 2 3 Average COMPUTATIONS CONCLUSION: