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When A baseball is hit straight up at an initial velocity of 100 ms how long will it take to hit the ground?
Wiki User
∙ 6y ago
Verified answer
The Baseball will travel upwards until its velocity is zero and then fall back down again.
The acceleration of the baseball is the constant acceleration due to gravity acting in a downwards direction.
The time taken to fall back down will be the same as the time to climb, thus the total time is twice the climb time.
Use Netwon's equations of motion and ignore air resistance, the time to the top of the climb is:
v = u + at
→ t = v - u/a
v = final velocity = 0 m/s at the top of the climb
u = initial velocity = +100 m/s
a = acceleration = -g m/s²
t_top = 0 - (100 m/s) / (-g m/s²) = 100/g s
→ t_total = 2 × t_top = 2 × 100/g s = 200/g s ≈ 200/9.81 s ≈ 20.4 s
Wiki User
∙ 6y ago
Wiki User
∙ 6y agosince gravity is accelerating down at 9.81 m/s/s, then at the top of its climb velocity is zero and it starts to fall back. velocity = acceleration x t ; 100 = 9.81 x time so time to climb is 10.2 seconds; another 10.2 seconds to fall is a total of 20.4 seconds to hit the ground. That's a long time and I don't think anyone can hit a baseball that hard!
Wiki User
∙ 6y agoApprox 20.4 seconds.
Anonymous
10
An arrow is shot straight up at an initial velocity of 250ms How long will it take to hit the ground?
This is a velocity question so u need to use uvaxt
How long does it take to hit the ground from 28000 feet high?
The answer will depend on what "it" is, and on what its initial velocity is.
Will a ball drop rest reach the ground quicker than the one lunched from the same height but with and initial horizontal velocity?
No. What counts in this case is the vertical component of the velocity, and the initial vertical velocity is zero, one way or another.
A baseball is hit straight up at an initial velocity of 100 meters per second. What will be the baseball's speed when it hits the ground?
I assume you hit it up from the ground level as well. From Conservation of Energy, it immediately follows that: * If there is no air resistance, when it hits the ground it will, once again, have a speed of 100 meters per second. * Since under usual circumstances there WILL BE air resistance, its speed will be less than 100 meters per second.
When a train moves along a straight track at a velocity of 95 km hr north A person walks toward the back of the train at a velocity of 3 km hr south what is the persons velocity relative to the ground?
If the person sat on the train their velocity relative to the ground would be 95kph. But he/she is goind 3kph to oppose this. So 95-3 = 92 kph to the north is velocity of person relative to the ground.
A baseball is hit straight up at an initial velocity of 150MS. what will be the baseballs speed when it hits the ground?
20.40
An arrow is shot straight up at an initial velocity of 250ms How long will it take to hit the ground?
This is a velocity question so u need to use uvaxt
An arrow is shot straight up at an initial velocity of 250 ms How long will it take the arrow to hit the ground?
51 seconds.
What is A football kicked off at an angle 20 from the ground reaches a maximum height of 4.7 m What is the initial velocity of the kick?
initial velocity of the kick = 28.06 m/s
Which information is needed to find the time a projectile is in motion?
The object's initial distance above the ground The object's initial velocity
How long does it take to hit the ground from 28000 feet high?
The answer will depend on what "it" is, and on what its initial velocity is.
A baseball is hit straight up at an initial velocity of 150 meters per second. What will be the baseball's speed when it hits the ground?
In a vacuum it would fall back to the same height at the same speed, 150m/s. It would then gain another minuscule fraction of speed as it fell from bat-height down to the ground. In the real world, a falling baseball will reach a maximum speed of around 42 meters per second because the air resistance slows it down. This is called Terminal Velocity.
Will a ball drop rest reach the ground quicker than the one lunched from the same height but with and initial horizontal velocity?
No. What counts in this case is the vertical component of the velocity, and the initial vertical velocity is zero, one way or another.
What is the rock's approximate velocity just prior to hitting the ground?
To answer this question one would need to know the rock's initial height and velocity.
What do you you need to know to determine how far a projectile travels horizontally?
initial velocity, angle of launch, height above ground When a projectile is launched you can calculate how far it travels horizontally if you know the height above ground it was launched from, initial velocity and the angle it was launched at. 1) Determine how long it will be in the air based on how far it has to fall (this is why you need the height above ground). 2) Use your initial velocity to determine the horizontal component of velocity 3) distance travelled horizontally = time in air (part 1) x horizontal velocity (part 2)
What do you need to know to determine how far a projectile travels horizontally?
initial velocity, angle of launch, height above ground When a projectile is launched you can calculate how far it travels horizontally if you know the height above ground it was launched from, initial velocity and the angle it was launched at. 1) Determine how long it will be in the air based on how far it has to fall (this is why you need the height above ground). 2) Use your initial velocity to determine the horizontal component of velocity 3) distance travelled horizontally = time in air (part 1) x horizontal velocity (part 2)
A baseball is hit straight up at an initial velocity of 100MS How long will it take to hit the ground?
Take acceleration of gravity = 9.8 m/s2 .The ball stops rising and starts falling in (100/9.8) seconds.It returns to the height of the bat in 2 x (100/9.8) = 20.408 seconds. (rounded)
