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A block is sliding along a frictionless surface at [v1] m/s. A second block with a mass of [m2] kg, sliding at a faster speed of [v2] m/s, collides with the first from behind and sticks to it. The final velocity of the combined blocks is [vf] m/s. What is the mass of the slower first block in kg?

A person is sledding down a hill. The combined mass of the person and sled is [m] kg. The hill is [h] m high with a [d] m long slope. There is a [F] N drag force due to air resistance. If the person and sled are moving at [v] m/s at the bottom of the hill, what was their initial velocity at the top of the hill?

A person uses a [F] N force to pull a child in a wagon up a hill. The combined mass of the child and wagon is [m] kg. The hill is [h] m high vertically and [d] m long along the slope. If the child and wagon are moving at [v] m/s at the top of the hill, how fast were they moving initially before climbing the hill?

Consider the following code: for i = 10:15 disp(“In a loop!”); if mod(i, 2) == 0 continue; else break; endend How many times does the message “In a loop!” gets printed?

Suppose a textfile has been opened with write permission and its identifier assigned to fid. Which of the following prints “Square root of 2 is 1.414214” to the file?

Consider the following row array with random integer elements: myArray = randi(10, 1, 10); Which of the following statement that gives us a sub-array with all even-numbered element of myArray.

Consider the following file and script. twoByTwo.txt: 1 2 3 4 readTwoByTwo.m: fid = fopen(‘twoByTwo.txt’, ‘r’);x = fscanf(fid, ‘%d’, [2,2]); What is the value of x?

Consider the following code: i = 0;while i < 5 i = i - 1;end How many times does this while-loop iterate?

Consider the following statements: a = [1:3:10];a + 3;a(1) = 5; What is the value of a?

Suppose we wish to read a text file line by line from the beginning to the end. Which of the following is NOT a part of the process to accomplish this task?