Predict/Calculate Referring to Example 4-11 Suppose we change the dolphin’s launch angle to 45.0°, but everything else remains the same. Thus, the horizontal distance to the ball is 5.50 m, the drop height is 4.10 m, and the dolphins launch speed is 12.0 m/s. (a) What is the vertical distance between the dolphin and the ball when the dolphin reaches the horizontal position of the ball? We refer to this as the “miss distance.” (b) If the dolphin’s launch speed is reduced, will the miss distance increase, decrease, or stay the same? (c) Find the miss distance for a launch speed of 10.0 m/s.
Predict/Calculate Referring to Example 4-11 Suppose we change the dolphin’s launch angle to 45.0°, but everything else remains the same. Thus, the horizontal distance to the ball is 5.50 m, the drop height is 4.10 m, and the dolphins launch speed is 12.0 m/s. (a) What is the vertical distance between the dolphin and the ball when the dolphin reaches the horizontal position of the ball? We refer to this as the “miss distance.” (b) If the dolphin’s launch speed is reduced, will the miss distance increase, decrease, or stay the same? (c) Find the miss distance for a launch speed of 10.0 m/s.
Predict/Calculate Referring to Example 4-11 Suppose we change the dolphin’s launch angle to 45.0°, but everything else remains the same. Thus, the horizontal distance to the ball is 5.50 m, the drop height is 4.10 m, and the dolphins launch speed is 12.0 m/s. (a) What is the vertical distance between the dolphin and the ball when the dolphin reaches the horizontal position of the ball? We refer to this as the “miss distance.” (b) If the dolphin’s launch speed is reduced, will the miss distance increase, decrease, or stay the same? (c) Find the miss distance for a launch speed of 10.0 m/s.
An object is launched at a velocity of 20 m/s in a direction making an angle of 35° with the vertical
above the ground. a) What is the maximum horizontal distance reached by the object? b) What is the
total flight time of the object? c) What is the velocity of the object upon hitting the target?
Abram threw his tennis ball upward from the ground at an angle of 50 degrees with respect to the horizontal ground. It left his hand with an initial speed of 40m/sec.
a) What is the time it will take it be before the tennis ball hits the ground?
b) how far from the starting point will it strike?
c) what is the maximum height reached?
d) where will the body be (horizontal and vertical distances) after 10 secs?
A stone is thrown upward from the top of a building at an angle of 70° to the horizontal and with an initial speed of 24m/s. The height of the building is 32m. a) How high above the initial point is the stone at it highest? b) How long does it take for the stone to hit the ground? c) where does the stone hit the ground? d) calculate the velocity and the direction of the stone at the moment of impact with the ground.
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