A frictionless rolling cart has an initial velocity of 10.0 m/s as it climbs up an incline of 24°. a. What is the cart's height above the ground when it monetarily comes to a stop on the ramp? b. At that instant, how far has it travelled along the ramp?
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- A car initially traveling eastward turns north by traveling in a circular path at uniform speed as shown in Figure P7.15. The length of the arc ABC is 235 m, and the car completes the turn in 36.0 s. (a) Determine the cars speed. (b) What is the magnitude and direction of the acceleration when the car is at point B? Figure P7.15A frictionless rolling cart has an initial velocity of 10.0 m/s as it climbs up anincline of 24 degrees .a. What is the cart’s height above the ground when it monetarily comes to astop on the ramp?b. At that instant, how far has it travelled along the ramp?3. A tennis ball is hit into the air and moves along an arc. Neglecting air resistance, a. for horizontal motion, where along the arc is the speed maximum? How about minimum speed, where? Justify your answer. b. For vertical motion, where along the arc is the velocity maximum? How about minimum velocity, where? Justify your answer.
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- 13. Challenge Problem: Pepper Potts is dropped from a helicopter! Iron Man is standing on top of a building level with but a distance L horizontally from the helicopter. He leaps off of the building 3 s after Pepper Potts is dropped and catches her after she has fallen straight down Arp. Between jumping off the building and catching Pepper he undergoes free fall- he doesn't turn on his rocket boosters until after he has caught her. a. Draw a picture of this situation. On top of your picture draw the first kinematic equation for Pepper: Arp = Voptp + at. (Hint: What is Pepper's initial 2 bal velocity?) Then, in another color, draw the first kinematic equation for Iron Man: 1 Ari = voiti += at?. - 2 b. What is the time it takes from when Pepper is initially dropped to when she is MOTER caught, tp, in terms of the distance she falls and her acceleration? What is the time it takes for Iron Man to catch Pepper, t₁, in terms of Pepper's time? c. What is Iron Man's initial velocity that he…A TI Yo Ac As Inv Eva Knc need to: 1. Ignore air resistance when answering all parts of this question. a. A golf ball is hit at 60.0° to the horizontal with an initial velocity of 1.50 x 102 ms¹. It lands at the same height from which it is hit. i. Show that the initial vertical velocity of the ball is 1.30 x 102ms¯ (1) 1/2 ii. Find the time of flight of the golf ball. iii. Calculate the range of the ball. KA1 (1) KA2 (3) KA2 (2) b. A baseball is hit at the same angle and initial speed as the golf ball in part a. However, its initial height is 1.3m above the ground. Explain why the baseball will travel further than the golf ball from part a.3. a. Since we use friction to accelerate our cars around turrns, we can't take turns as fast in wet or snowy weather. What is the minimum radius turn you can make at a speed of 56.5 mph (25.2555 m/s) in dry weather with Us=0.75? Suppose the road is flat. 3.4361 Previous submissions: b. What is the minimum radius turn you can make at the same speed when it's snowing and us = 0.25? 10.3083 Previous submissions: m m incorrect incorrect