(A) vertically upward (B) horizontaliy forward Motur (C) horizontally backward (

Question

(A) vertically upward (B) horizontaliy forward Motur (C) horizontally backward (D) zero E) upward and forward, at approximately 45 to the horizontal 32. A student is testing the kinematic equations for T uniformly accelerated motion by measuring the time it takes for light-weight plastic balls to fall to the floor from a height of 3 m in the lab. The student predicts the time to fal using g as 9.80 m/s but finds the measured time to be 35% greater, which of the following is the most likely cause of the large percent error? (A) The acceleration due to gravity is 70% (B) The acceleration due to gravity is 70% less (C) Air resistance increases the downward D) The acceleration of the plastic balls is not (E) The plastic bails are not truly spherical. greater than 9.80 m/s2 at this location than 9.80 m/s2 at this location acceleration. uniform.

Explanation / Answer

Here,

as the speed of the plastic ball increases , the air resistance force acting upwards on the plastic ball also increases

thus , the acceleration of the ball decreases in downwards direction

hence, taking a longer time to reach ground.

the correct option is D) the accelerationb of the plastic balls is not uniform

(due to air resistance force )

Related Questions

Navigate

• Browse (All)
• Browse #
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.