Respuesta :
The initial speed we need to make the remaining 5.10 ft putt is 1.63 m/s.
What is speed?
- The speed (commonly referred to as v) of an object in everyday use and kinematics is the magnitude of the change in its role over time or the magnitude of the change in its position per unit of time; it is thus a scalar quantity.
- The distance traveled by an object in a time interval is divided by the period of the interval; the initial speed is the limit of the average speed as the length of the time interval approaches zero.
- Velocity is not the same as speed.
The initial speed is:
- a = acceleration of the ball
- d = stopping distance = 23.5 - 5.10 = 18.4 ft = 5.61 m
- v₀ = initial velocity of the car = 1.45 m/s
- v = final velocity of the car = 0 m/s
By using the equation:
- v² = v₀² + 2 a d
- 0² = 1.45² + 2 a (5.61)
- a = - 0.187 m/s²
To win the tournament:
- a = acceleration of the ball = - 0.187 m/s²
- d = stopping distance = 23.5 ft = 7.1 m
- v₀ = initial velocity of the car = ?
- v = final velocity of the car = 0 m/s
Use the equation as follows:
- v² = v₀² + 2 a d
- 0² = v₀² + 2 (- 0.187) (7.1)
- v₀ = 1.63 m/s
Therefore, the initial speed we need to make the remaining 5.10 ft putt is 1.63 m/s.
Know more about speed here:
https://brainly.com/question/13943409
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The correct question is given below:
At the 18th green of the U.S. Open, you need to make a 23.5ft putt to win the tournament. When you hit the ball, giving it an initial speed of 1.45 m/s, it stops 5.10 ft short of the hole. Assuming the deceleration caused by the grass is constant, what should the initial speed have been to just make the putt? 2. What initial speed do you need to make the remaining 5.10 ft putt?
