The velocity of a ball is thrown up is 20 meters/second. It attains zero velocity after 3.5 seconds. What is the average acceler

Question

mariarad

1 month ago

12

The velocity of a ball is thrown up is 20 meters/second. It attains zero velocity after 3.5 seconds. What is the average acceler

ation of the ball during its upward flight?

Mathematics

2 answers:

PIT_PIT [12.4K] · Answer 1 · 2026-02-27T09:20:48+03:00

PIT_PIT [12.4K]1 month ago

7 0

Average acceleration can be calculated as (v - v₀) / Δt.
Here, v = 0 m/s, v₀ = 20 m/s, and Δt = 3.5 s.
Thus, a (average) = (0 m/s - 20 m/s) / 3.5 s = -20 m/s / 3.5 s =
= -5.7142857 m/s² ≈ - 5.71 m/s²

PIT_PIT [12.4K] · Answer 2 · 2026-02-27T09:22:06+03:00

Answer:

Average acceleration = 5.714 meter per second²

Step-by-step explanation:

A ball is thrown upwards with an initial speed of 20 meters per second.

After 3.5 seconds, its speed drops to zero, indicating it has reached the peak height.

We now need to find the average acceleration during the ascent.

Thus, $\text{Acceleration}=\frac{\text{Change in velocity}}{\text{Duration of motion}}$

Acceleration = $\frac{20-0}{3.5}$

= 5.714 meter per second²