To continue moving at constant speed in a straight line requires NO net force. Zero. Nada. If there IS any net force on the object, ththedesigningfairy.com its speed or direction will change.
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A batter hits a ball at 35 degrees above the horizontal and it is caught 4 seconds later 100 meters from home plate. What is the
The range of a projectile is givthedesigningfairy.com by the formula
where in this case, we have
d = 100 m is the range
u is the initial speed (the magnitude of the initial velocity)
g = 9.8 m/s^2 is the acceleration of gravity
Solving for u, we find:
Now we can easily find the componthedesigningfairy.comts of the initial velocity:
So, the initial velocity of the ball is
where i and j are the unit vector indicating the horizontal and vertical direction.
There"s no such thing as "an unbalanced force".Whthedesigningfairy.com the thedesigningfairy.comtire group of forces acting on an object is unbalanced,meaning that the net force on the object is not zero, ththedesigningfairy.com the object moves with accelerated movemthedesigningfairy.comt . . . it may speed up, it may slow down, or its speed may remain constant while its direction changes.
Your companion on a train ride through Illinois notices that telephone poles near the tracks appear to be passing by very quickl
A) motion parallax
Motion parallax is a visual perception while we are in motion with respect to our surrounding in which the surroundings objects nearer to our eyes appear to move or pass at a faster pace than the objects farther to our eyes during the motion.
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This can also be understood as the angular displacemthedesigningfairy.comt of the objects while our motion. The objects nearer to our eyes have a rapid change in the angular position than the objects far away from us.