Velocity of a Tennis Ball Launched Upwards

What is the velocity of a tennis ball two seconds after it is launched upwards?

Given data:

  • Initial velocity (u) = 34 m/s
  • Time (t) = 2 seconds
  • Acceleration due to gravity (g) = 9.8 m/s2

Answer:

The velocity of the tennis ball two seconds after launch is 14.4 m/s.

Explanation:

When a tennis ball is launched vertically upwards, it experiences a change in velocity due to the force of gravity.

The final velocity (v) of the tennis ball after t seconds can be calculated using the formula:

v = u - g * t

Substitute the given values into the formula:

v = 34 - (9.8 * 2)

v = 34 - 19.6

v = 14.4 m/s

Hence, the final velocity of the tennis ball two seconds after launch is 14.4 m/s. The initial velocity of the ball is 34 m/s, the time taken is 2 seconds, and the acceleration due to gravity is 9.8 m/s2.

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