Hello,

Please ONLY attempt if you intend to DO ALL of the following questions.

Thank you.

3. A vertical spring is stretched 8.5[2' cm by a mass of [1.750 kg. What is the spring constant? lii'ii'ritten Response: Please be sure to show your work for each question. Such as variables list, formulas, rearranged formulas, substitution, nal answer with correct units, direction (if necessary) and signicant digits. 1. You kick a soccer ball at an angle of 50" above the ground with a velocity of 24 m/s. Determine: a. How high will it go? (2 marks] b. How much time does it spend in the air? (2 marks) 2. A 3.0 kg object is swung from the end of a 3.50 m string in a vertical circle. If the period is 2.5 s. what is the tension in the string (assume uniform speed) a. when the object is at the too? [2 marks) b. When the object is at the bottom? (2 marks) HINT: Remember the simple check you can use to see if you did it right. A 1500 kg roller coaster begins at a speed of 5.0 m/s and a height of 45 n1 above the ground. It rolls down the track to ground level. Assume there is no friction for part a. only. What is the speed of the roller coaster when it makes it to ground level? (2 marks] If the actual speed of the rollercoaster is 20 m/s at ground level, how much energy is lost to friction? (2 marks}