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Step2247 [10]
2 years ago
7

A ball is projected upward at time t = 0.0 s, from a point on a roof 60 m above the ground. The ball rises, then falls until it

strikes the ground. The initial velocity of the ball is At time what is the acceleration of the ball? Neglect air resistance.
Physics
1 answer:
musickatia [10]2 years ago
7 0
<span> y=y0 + vt +1/2gt^2
(solve for t here) cause you know y,y0,v,g
you will do quad formula here

then:
v=v0 +at solve for v
(remember the direction of the ball too (signs))

The main thing to remember here is that when the ball passes exactly (height) where it was launched it will travel the speed at which it was launched. *its almost like the ball was thrown in the downward direction. </span>
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Question 33
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Answer:

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When atoms _____, they break down into atoms of different elements and release energy.
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It may be combine?

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5 0
2 years ago
Determine which the following are defined Whenever they occur denctes multivariable function and denotes vector field both of wh
tresset_1 [31]

Yes, all of the above are defined whenever they occur and denote multivariable functions and vector fields which are twice continuously differentiable on a common domain.

What is vector field?
A vector field is the assignment of the a vector to each point inside a subset of space in the fields of vector calculus and physics. For example, a vector field inside the plane could be visualised as a group of arrows, each attached to the a point in the plane and each with a specific magnitude and direction. Vector fields are frequently used to simulate various physical phenomena, such as the strength and motion of a force as it shifts through one point to the next or the speed and trajectory of a fluid moving through space.

The first expression, V . (F . Vf), denotes a multivariable function which is the dot product of a vector V and the composition of a function F with a vector field Vf.

The second expression, V . (V x Vf), denotes a multivariable function which is the dot product of a vector V and the cross product of a vector V and a vector field Vf.

The third expression, V x (V . F), denotes a vector field which is the cross product of a vector V and the dot product of a vector V and a function F.

The fourth expression, V x (V x f), denotes a vector field which is the cross product of a vector V and the cross product of a vector V and a function f.

The fifth expression, V x (V x F), denotes a vector field which is the cross product of a vector V and the cross product of a vector V and a function F.

The sixth expression, V . (V x F), denotes a multivariable function which is the dot product of a vector V and the cross product of a vector V and a function F.

To learn more about vector field
brainly.com/question/24332269
#SPJ4

6 0
1 year ago
It's always a good idea to wear a seatbelt in a car, because if the car comes to a sudden stop, you will not _________.
IgorLugansk [536]

It's always a good idea to wear a seatbelt in a car, because if the car comes to a sudden stop, you will not move forward very much since the seatbelt is holding you back. The answer is letter D. 

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