A projectile is launched with an initial velocity of 40 m/s at an angle of 45 de

Practice Questions

Q1
A projectile is launched with an initial velocity of 40 m/s at an angle of 45 degrees. What is the vertical component of the velocity?
  1. 20 m/s
  2. 28.28 m/s
  3. 30 m/s
  4. 40 m/s

Questions & Step-by-Step Solutions

A projectile is launched with an initial velocity of 40 m/s at an angle of 45 degrees. What is the vertical component of the velocity?
  • Step 1: Identify the initial velocity (u) of the projectile, which is given as 40 m/s.
  • Step 2: Identify the angle of launch (θ), which is given as 45 degrees.
  • Step 3: Convert the angle from degrees to radians if necessary, but for 45 degrees, we can use the sine value directly.
  • Step 4: Calculate the sine of the angle: sin(45 degrees) = √2/2.
  • Step 5: Use the formula for the vertical component of velocity: Vy = u * sin(θ).
  • Step 6: Substitute the values into the formula: Vy = 40 * (√2/2).
  • Step 7: Calculate the result: Vy = 40 * 0.7071 (approximately) = 28.28 m/s.
  • Projectile Motion – Understanding the components of velocity in projectile motion, specifically how to calculate the vertical component using trigonometric functions.
  • Trigonometric Functions – Applying sine function to find the vertical component of velocity based on the launch angle.
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