A boy moves down a waterslide from a height of 15 meters. What is his velocity when he hits the water at the bottom of the slide? Assume zero friction on the slide. a
17 meters/second

b
10 meters/second

c
19 meters/second

d
14 meters/second

increasing transnational kinetic energy. because the transnational kinetic energy formula consists of only two variables, mass and velocity, increasing one of those properties is the only way to increase an object's transnational kinetic energy. increases to mass and velocity, however, do not have the same impact.

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.

b. a lightning bug, plug of grass, and a worm

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle