Given this graph plotting velocity versus time, estimate the acceleration of object A at points X and Y respectively.

Question

anonymous · Answer

A.) 0 meters/second2 and -1 meter/second2
B.) 0 meters/second2 and +1 meter/second2
C.) 5 meters/second2 and -2 meters/second2
D.) 9 meters/second2 and -1 meters/second2
E.) 0 meters/second2 and +3 meters/second2

shamim · Answer

wt do u think the slope at point X

shamim · Answer

i m giving u an attachment

shamim · Answer

attachment

shamim · Answer

slope is acceleration in velocity time graph

anonymous · Answer

Why is the second one a -1? Is it because the line is negative?

anonymous · Answer

Oh! So it's 0 and -1 because the angle was 0 in the tangent line and 3 at the bottom?

shamim · Answer

slope will b negative. if the angle is with negative X axis

shamim · Answer

acceleration is 0 . because slope at point X is 0

shamim · Answer

plz make clear ur question

anonymous · Answer

Can you elaborate on why the slope is -1 on the bottom?

shamim · Answer

of course

shamim · Answer

c my attachment

shamim · Answer

anyway do u know slope of a velocity time graph is acceleration

anonymous · Answer

Yeah, well, I just learned that. Thank you for your assistance!

shamim · Answer

u r most welcome