An object is moving initially with a velocity of 5.1 m/s. After 3.8 s the object's velocity is -2.7 m/s. What is the object's average acceleration during this time?

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two charges are fixed in place on the x-axis as shown. the charge at x = 0 is negative and has magnitude q = 2 μcoulombs (1 μcoulomb = 10-6 coulombs). the charge at x = d, (d = +12 cm), is positive and has magnitude q = 4 μcoulombs. find a point x = xo along the x-axis at which the electric field is zero.

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

isoceles right angled triangle

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