A car travels down a straight and level road at a constant speed of 25 m/s for 12 s. What is the acceleration of the car?       

         Alvarez, a handyman, accidentally drops his 500 g work tool from a 12 m high building (take g = 9.80 m/s2) (i).          How long does it take for the tool to hit the ground?                                                                       (1.5 points)          (ii).         What is the acceleration of the tool just before it hits the ground?                                                     (1.0 point) (iii).       At what speed does the tool hit the ground?                                                                                       (1.5 points) (iv).        What is the mass of the tool just before it hits the ground?                                                               (1.0 point)

       You fire a bullet vertically up at a speed of 120 m/s. (i).          What are the speed and acceleration of the bullet at maximum height.                                            (1.5 points) (ii).        How long does it take for the bullet to get to maximum height?                                                     (1.5 points) (iii).       What is the maximum height that the bullet reaches before falling back down?                               (1.5 points)

   A 92 kg high jumper running 11 m/s executes a jump. (a).      What is his kinetic energy before the jump?                                                                                        (1.5 points)  (b).     Using the law of conservation of energy or otherwise, calculate how high he can jump.                    (1.5 points)

Calculate the freezing point of a 0.08500 m aqueous solution of glucose. The molal freezing-point-depression constant of water is

A solution is prepared by dissolving 7.00 g of glycerin (C3H8O3) in 201 g of ethanol The freezing point of the solution is __________°C. The freezing point of pure ethanol is at 1 atm. The molal-freezing-point-depression constant (Kf) for ethanol is The molar masses of glycerin and of ethanol are 92.1 g/mol and 46.1 g/mol, respectively.

Molality is defined as the __________.

The phrase “like dissolves like” refers to the fact that __________.

When solutions of strong electrolytes in water are formed, the ions are surrounded by water molecules. These interactions are described as a case of __________.

As a solid element melts, the atoms become __________ and they have __________ attraction for one another.