A ball is thrown horizontally at a height of 1.5 meters at a velocity of 70 m/s. Assume no air resistance. How long until the ball reaches the ground? 0.25 s
0.38 s
0.55 s
0.67 s

Explanation:

Given

Required

Determine the time to hit the ground

Using free fall formula:

Take g as 9.8 and substitute value for S

Make t^2 the subject

Solve for t

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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.

heat the gas and measure the pressure