What is the distinction between speed and a situation in which an object\'s spee

Question

What is the distinction between speed and a situation in which an object's speed is constant but its velocity A ball thrown at a brick wall bounces directly back with the speed it had when it struck the wall. Has the velocity o e changed? Explain. What is "vector addition" and how is it done? Can the resultant of two velocities have zero magnitude. It so, g an example. A swimmer heads for the opposite bank of a river. Make a sketch showing the swimmer's two velocities and the resultant velocity. A basketball player shoots a free throw. Make a sketch showing the basketballs velocity just after the ball leaves the player's hands. Draw in two components of this velocity, one horizontal and one vertical. Repeat the sketch for the instant just before the ball reaches the basket. What is different? What is the relationship between velocity and acceleration? As a stop light changes from red to green, a car starts to cross through the intersection. An instant before it begins to move, its A yacht is 20 long. Express this length in feet. 2. Express your height in (a) meters and (b) centimeters. A convenient time unit for short time interval is the millisecond. Express 0.0452 s in milliseconds. One mile is equal to 1,609 m. Express he distance in kilometers and in centimeters.

Explanation / Answer

I am assuming you need answers for "Problems"

1)yatch length = 20m

20m = 2000cm = 2000/2.54 = 787.4 inches = 65.62 feet

2) I do not know what your height is. Assuming your height is 6 feet,

6 feet = 72 inches = 72*2.54 = 182.88 cm = 1.8288meters

Height in centimeters = 182.88 cm

3)0.0452 second = 0.0452*1000 = 45.2 milliseconds

4)one mile = 1609 m= 1609/1000 = 1.609 km

one mile = 1609 m = 160900 cm

  

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