A particle moving with a constant acceleration has a velocity of 20 cm/s when its position is x = 10 cm. Its position 7.0 s later is x = -30 cm. What is the acceleration of the particle?
A)(-7.3 cm/s2)
B)(-8.9 cm/s2)
C)(-11 cm/s2)
D)(-15 cm/s2)
E)(-13 cm/s2)

Question

Quizplus · Accepted Answer

The acceleration of the particle can be calculated using the formula:a = (v_f - v_i) / twhere:a is the accelerationv_f is the final velocityv_i is the initial velocityt is the timeIn this problem, we are given that the initial velocity is 20 cm/s, the final velocity is -30 cm/s, and the time is 7.0 s. Substituting these values into the formula, we get:a = (-30 cm/s - 20 cm/s) / 7.0 sa = -50 cm/s / 7.0 sa = -7.14 cm/s^2Therefore, the acceleration of the particle is -7.14 cm/s^2.

A Particle Moving with a Constant Acceleration Has a Velocity