A 25% Part (d) Find the time, in seconds, from the moment the dime is released until it strikes the ground. t ={20%} Problem 4: A very strong, but inept. shot putter puts the shot straight up vertically with an initial speed of 10.2 11155. $3 How long does he have to get out of the way if the shot was, released at a height of 2.9 m. and he is 1. 95 111 tall? r=| (25%) Problem 1: A ball is thrown from a rooftop with an initial downward velocity of magnitude '00 = 2.68 mfs. The rooop is at height h = 32.2 meters above the ground. Use a coordinate system where upwards is positive, as indicated in the gure. 3 9 33% Part (3) Find the vertical component of the nal velocity. Uf' , in meters per second. with which the ball hits the g'ound. Feedback: is available. of)\" = 25.27 m-Js X Intorreci! -.=.- 3/ 33% Part (In) If we wanted the hall's nal speed to be exactly 2?.3 mfs. om what height. hum. in meters, would we need to throw it with the same initial velocity? hm = 3?.62 m 1' Correct! .> $3 33% Part (c) If the height is fixed at 32.2 n1, but we wanted the hall's nal speed to be 32.7 mfs. what would the vertical component. in meters per second, of the initial velocity, my, need to be? vi,\" = l 111:\" s Degrees O Radians Submit Hint Feedback Grade Summary Deductions 40 9'0 Potential 60% Submissions Attempts remaining: g (2 D .-'o per attempt) detailed view 1 20% 2 20% {25%) Problem 3: Two basketball players jump upward simultaneously. The first reaches a height of 1.03 in above the ground. while the second reaches a height of just (3.44 111. $3 How many seconds after the second player reaches the ground does the rst player reach the ground? Neglect air resistance. Grade Summary Ar = Deductions Potential 80% SiIIO Submissions . Attempts remaining: _ cotanO { per attempt) atallO detailed View 1 tanhO Degrees C' Radians Submit Hint Feedback I give up! (25%) Problem 4: A rocket accelerates upward from rest, due to the first stage, with a constant acceleration of a1 = 73 m/s for t1 = 33 s. The first stage then detaches and the second stage fires, providing a constant acceleration of a2 = 45 m/s for the time interval t2 = 49 s. acceleration two a, acceleration one a , Otheexpertta.com 33% Part (a) Enter an expression for the rocket's speed, v1, at time to in terms of the variables provided. Grade Summary V1 = Deductions 0% Potential 100%(25%) Problem 4: A rocket accelerates upward from rest, due to the first stage, with a constant acceleration of a1 = 73 m/s for t1 = 33 s. The first stage then detaches and the second stage fires, providing a constant acceleration of a2 = 45 m/'s for the time interval to = 49 s. acceleration two a2 acceleration one a1 Otheexpertta.com 33% Part (a) Enter an expression for the rocket's speed, v1, at time to in terms of the variables provided. 33% Part (b) Enter an expression for the rocket's speed, v2, at the end of the second period of acceleration, in terms of the variables provided in the problem statement. Grade Summary U2 Deductions 0% Potential 100% 7 9 HOME Submissions 1-2 Attempts remaining: 5 a1 az d 5 6 (20% per attempt) h 3 detailed view k m + END P t1 to VO BACKSPACE DEL CLEAR Submit Hint Feedback I give up!(25%) Problem 4: A rocket accelerates upward from rest, due to the first stage, with a constant acceleration of a1 = 73 m/s for t1 = 33 s. The first stage then detaches and the second stage fires, providing a constant acceleration of a2 = 45 m/s for the time interval t2 = 49 s. acceleration two a, acceleration one Otheexpertta.com A 33% Part (a) Enter an expression for the rocket's speed, v1, at time to in terms of the variables provided. A 33% Part (b) Enter an expression for the rocket's speed, v2, at the end of the second period of acceleration, in terms of the variables provided in the problem statement. A 33% Part (c) Using your expressions for speeds v1 and v2, calculate the total distance traveled, in meters, by the rocket from launch until the end of the second period of acceleration. Grade Summary dt = m Deductions 0% Potential 100%