Draw a velocity-time graph for a ball that has been thrown straight up into the air. (Neglect air resisitance)
by 
RPD1223
ANSWERS: 4
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It's a straight line cutting the time axis when the ball is at its apex.
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Whenever you neglect air resistance in kinematics you should see a parabola for a graph when charting velocity of an object under the force of gravity. So if we set Velocity(m/s) as the y axis and time(s) as the x axis you should see velocity at it's maximum at the very beginning and at the very end of the graph. So at time 0 when the ball is just leaving the hand the Velocity will be at it's maximum. At some time(x) the ball will have no kinetic energy and only potential.. therefore velocity will be 0. At the final time when the ball touches your hand again it will have the same speed as when you first threw it up due to conservation of energy.
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Why you guys act so.. Why do you want other people to do your home work.. At least give it a try and explain whats your difficulty... And think someone will make a graph for you here..!!
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A straight line originating from the coordinate (0,0) till a coordinate (x1,y1) then falling with the same slope but negetive in valoue and finally meeting the y axis at the ordinate (0,y1). Making it more simpler, it's just like an isosceles triangle havimg y axis as the base and a vertex as (0,0).
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