At what velocity will the object hit the ground?

Multiply the time by the acceleration due to gravity to find the velocity when the object hits the ground. If it takes 9.9 seconds for the object to hit the ground, its velocity is (1.01 s)*(9.8 m/s^2), or 9.9 m/s.

What is the ball’s velocity when it returns to is starting height?

Answer: 0 m/s. The instantaneous speed of any projectile at its maximum height is zero. Because gravity provides the same acceleration to the ball on the way up (slowing it down) as on the way down (speeding it up), the time to reach maximum altitude is the same as the time to return to its launch position.

What is the initial velocity of the object?

Therefore, the initial velocity is the velocity of the object before the effect of acceleration, which causes the change. After accelerating the object for some amount of time, the velocity will be the final velocity.

What is the initial velocity of a ball thrown off a building?

Due to symmetry (you can verify this with calculation), the ball will be moving 80 ft/sec when it comes back down to the point from which you threw it on the building. So you can reduce the problem to describing a ball thrown off a building with initial velocity 80 ft/sec downward. We have

What is the speed of the ball when it hits the ground?

Since the (vertical) velocity of the ball is given by (assuming g ≈ constant) v(t) = ds dt = v0 − gt, the speed of the object when hits the ground is the velocity at time t ∗, where t ∗ is the value of t when s(t) = sG = 0 (if your reference system is placed at s = sG = 0 for the ground).

What is the maximum height of a ball thrown vertically upward?

If a ball is thrown vertically upward from the roof of a 32 ft. tall building with a velocity of 80 ft/sec, it’s height in feet after t seconds is s(t)=32+80t-16t^2 I know the maximum height is 13… Stack Exchange Network

Why do the two balls hit the ground at the same time?

The basic reason the two balls hit the ground at the same time is that the ball is moving faster in the case of the parabolic motion when compared with the straight down motion. The Velocity of the Ball just before it hits the ground: The horizontal velocity V. x=20 m/s is always the in this problem.