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I Four forces are exerted on the object shown in FIGURE P3.44. (Forces are measured in newtons, abbreviated N.) The net force on the object is
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- It is possible to shoot an arrow at a speed as high as 100 m/s. (a) If friction can be ignored, how high would an arrow launched at this speed rise if shot straight up? (b) How long would the arrow be in the air?arrow_forwardAnthony carelessly rolls his toy car off a 74.0-cm-high table. The car strikes the floor a horizontal distance of 97.0 cm from the edge of the table. a. What was the velocity with which the car left the table? b. What was the angle of the cars velocity with respect to the floor just prior to impact?arrow_forwardA projectile is launched at some angle to the horizontal with some initial speed vi, and air resistance is negligible. (a) Is the projectile a freely falling body? (b) What is its acceleration in the vertical direction? (c) What is its acceleration in the horizontal direction?arrow_forward
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- A crazy person jumped off a 100-meter sea cliff because of climate change (it's hot, you know). He is launched up in the air at a velocity of 20m/s in a direction making an angle of 25 degrees upward with the horizontal. a. What is the maximum height reached by the crazy person? b. What is the total time flight (between launch and touching the water surface) of the crazy person? c. What is the horizontal range of the crazy person? d. What is the magnitude of the velocity of the crazy person just before it hits the ground? Use Gresaarrow_forwardA river flows due south with a speed of 3.5 m/s. You steer a motorboat across the river; your velocity relative to the water is 5.2 m/s due east. The river is 950 m wide. (a) What is your velocity (magnitude and direction/angle) relative to the earth? (b) How much time is required to cross the river? (c) How far south of your starting point will you reach the opposite bank? (Draw a free-body diagram.)arrow_forwardA fastball pitcher can throw a baseball at a speed of 40 m/s (90 mi/h). (a) Assuming the pitcher can release the ball 16.7 m from home plate so the ball is moving horizontally, how long does it take the ball to reach home plate? (b) How far does the ball drop between the pitcher’s hand and home plate?arrow_forward
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