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18. What is the value of the String referred to by the variable s after the following code executes? String fun = "bcd"; String a = ""; for (int i = 0; i < fun.length(); i++) { a = a + (char) (fun.charAt(i) + 3); String s = ""; for (int i = 0; i < a.length(); i++) { S = S + (char) (a.charAt(i) + 'A' -'a');
The velocity vs. time graph for an object moving along a straight path is shown in Figure P2.21.
(i) Find the average acceleration of the object during the time interval
(a) 0 to 5.0 s,
(b) 5.0 s to 15 s., and
(c) 0 to 20 s.
(ii) Find the instantaneous acceleration at (a) 2.0 s, (b) 10 s, and (c) 18 s.
The velocity vs. time graph for an object moving along a straight path is shown in Figure P2.21. (i) Find the average acceleration of the object during the time intervals (a) 0 to 5.0 s, (b) 5.0 s to 15 s, and (c) 0 to 20 s. (ii) Find the instantaneous acceleration at (a) 2.0 s, (b) 10 s, and (c) 18 s.