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Zack A

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PRACTICE IT Use the worked example above to help you solve this problem. A ball is thrown upward from the top of a building at an angle of 30.0° to the horizontal and with an initial speed of 23.0 m/s. The point of release is h = 48.0 m above the ground. (a) How long does it take for the ball to hit the ground? s (b) Find the ball's speed at impact. m/s (c) Find the horizontal range of the ball. m EXERCISE Suppose the ball is thrown from the same height as in the PRACTICE IT problem at an angle of 32.0° below the horizontal. If it strikes the ground 48.2 m away, find the following. (Hint: For part (a), use the equation for the x-displacement to eliminate v0t from the equation for the y-displacement.) (a) the time of flight s (b) the initial speed m/s (c) the speed and angle of the velocity vector with respect to the horizontal at impact speed m/s angle ° below the horizontal 7. [3/3 Points] A rock is tossed from the top of a building at an angle of 20° above the horizontal with an initial speed of 13 m/s. The rock lands on the [ground] 44.76 m

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10:31 AM \( \odot \odot \odot \cdot \) \( 2 / 5 \) ! farther from the building than before. PRACTICE IT Use the worked example above to help you solve this problem. A ball is thrown upward from the top of a building at an angle of \( 30.0^{\circ} \) to the horizontal and with an initial speed of \( 23.0 \mathrm{~m} / \mathrm{s} \). The point of release is \( h=48.0 \mathrm{~m} \) above the ground. (a) How long does it take for the ball to hit the ground? is (b) Find the ball's speed at impact. \( \mathrm{m} / \mathrm{s} \) (c) Find the horizontal range of the ball. \( \mathrm{m} \) EXERCISE HINTS: GETIING STARTED I I'M STUCK! Suppose the ball is thrown from the same height as in the PRACTICE IT problem at an angle of \( 32.0^{\circ} \) below the horizontal, If it strikes the ground \( 48.2 \mathrm{~m} \) away, find the following. (Hint: For part (a), use the equation for the \( x \)-displacement to eliminate \( y_{0} t \) from the equation for the \( y \)-displacement.) (a) the time of flight (b) the initial speed (c) the speed and angle of the velocity vector with respect to the horizontal at impact speed \( \square \mathrm{m} / \mathrm{s} \) angle \( \square \). below the horizontal Need Help? Read it Submit Answer Viewing Saved Work Revert to Last Reseonse 7. [3/3 Points] DETAILS PREVIOUS ANSWERS SERCP11 3.2.OP.013. A rock is tossed from the top of a building at an angle of \( 20^{\circ} \) above the horizontal with an initial speed of \( 13 \mathrm{~m} / \mathrm{s} \). The rock lands on th 44.76 44.76 \( \checkmark \mathrm{m} \) Need Help? Ra. 4 . Q Search 200 7 e E ?

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Nishant Kumar

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Anand Jangid

Numerade educator

The best leaper in the animal kingdom is the puma, which can jump to a height of 3.7 m when leaving the ground at an angle of 45°. With what speed must the animal leave the ground to reach that height? m/s 1 SIZZLE Identify the given values in the problem. SIZZLE The given values are the height h = 3.7 m, the launch angle ? = 45°, and the acceleration due to gravity g = 9.8 m/s². 2 SIZZLE Convert the launch angle from degrees to radians, since the trigonometric functions in most calculators use radians. The conversion formula is radians = degrees × ?/180.

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Jake Knight

Numerade educator

A hiker walks 1.55 km south and then 2.75 km east, all in 3.40 hours. HINT (a) Calculate the magnitude (in km) and direction (in degrees south of east) of the hiker's displacement during the given time. magnitude 3.05 km direction 29.36 I. 8 south of east (b) Calculate the magnitude (in km/h) and direction (in degrees south of east) of the hiker's average velocity during the given time. magnitude 0.926 - km/h direction 29.36 if south of east (c) What was her average speed (in km/h) during the same time interval? 1.26 divided by the elapsed time. km/h

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Jake Knight

Numerade educator

A projectile is launched at some angle to the horizontal with some initial speed v_i, and air resistance is negligible. (a) Is the projectile a freely falling body? Yes No (b) What is its acceleration in the vertical direction? (Let up be the positive direction.) 9.8 m/s^2 (c) What is its acceleration in the horizontal direction? 0 m/s^2 EXAMPLE 3.8 That's Quite an Arm GOAL Solve a two-dimensional kinematics problem with a nonhorizontal initial velocity, starting and ending at different heights.

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Willis James

Numerade educator

Simplify the following union and/or intersection. [0, 13] ? (13, 16) Answer

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Ma. Theresa Alin

Numerade educator

Simplify the following union and/or intersection. ? ? ? Answer

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Donna Densmore

Numerade educator

Identify the factors in the following expression: -3x^5y^6

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Donna Densmore

Numerade educator

If the following statement is false, choose False Statement. Otherwise, identify the property that justifies it. If one of the cancellation properties is being used to transform the equation, identify the quantity that is added to or multiplied by both sides. 7 x+10 y^{5}-z=7 y^{5}-z Leftrightarrow 7 x+3 y^{5}=0 Answer Selecting an option will display any text boxes needed to complete your answer. Multiplicative Cancellation Property Additive Cancellation Property Zero Factor Property False Statement

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Joseph z.