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.