###### Asked in Physics

Physics

# What will be the change in velocity for a 10 gram object dropped from the roof of a 20 Meter building if it takes 2 seconds to reach the ground?

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## Related Questions

###### Asked in Math and Arithmetic, Physics, Algebra

### What would be the change in velocity for a 10 gram object dropped from the roof of a 20 meter building if it takes 2 seconds to reach the ground Hint acceleration due to gravity is 9.8 ms²?

Acceleration = (change in velocity) / (time for the change)
9.8 = (change in velocity) / (2 seconds)
9.8 x 2 = change in velocity = 19.6 meters per
second .
Hint: The mass of the object and the height of the building are
there just to
throw you off balance. You don't need either of them to answer
the question.

###### Asked in Math and Arithmetic, Physics

### Why is acceleration measured in meters seconds squared?

Acceleration is the rate of change in velocity, that is the
finishing velocity minus the starting velocity divided by the time
taken for that change.
Velocity is the rate of change in distance, that is the
finishing distance minus the starting distance divided by the time
taken for that change.
Distance may be measured in metres and time in seconds. In that
case velocity would be measured in metres per second.
Acceleration is then measured in (metres per second) per second
or metres per second2.

###### Asked in Physics

### How do you calculate change in velocity?

Two ways:
If the change in velocity is the result of hitting something,
use the Momentum Equation.
If the change in velocity is the result of applying a force, use
the Impulse Equation. You probably mean this equation, which
is:
FT = m(Vf - Vo)
Or,
An object of mass "m" will change from velocity "Vo" to velocity
"Vf" if the force "F" is applied for "T" seconds.

###### Asked in Science, Math and Arithmetic, Algebra

### What is the velocity of 10m 12h?

0.0002315 m/s OR 0.0008333 km/hour
The velocity of an object is the rate of its change in position
in a certain direction.
Velocity is a vector quantity; this means that it has both a
magnitude and direction.
To find the average velocity of an object in motion, the
following equation is used:
average velocity= (total displacement)/ (total time elapsed)
The SI units of velocity are "m/s" , but any distance unit over
any time unit is also acceptable.
Solving for the velocity asked for:
First let's change hours to seconds:
(12 hours ) x (6o minutes/hour )x (60 seconds/minute)= 43200
seconds
Finding the velocity:
average velocity= (displacement)/ (time)= 10m/ 43200 seconds=
0.000231481 m/s

###### Asked in Physics

### How does the velocity effect the acceleration?

Acceleration is a change in velocity. More precisely, to get
acceleration, you divide the change in velocity, by the time that
passed.
Acceleration is a change in velocity. More precisely, to get
acceleration, you divide the change in velocity, by the time that
passed.
Acceleration is a change in velocity. More precisely, to get
acceleration, you divide the change in velocity, by the time that
passed.
Acceleration is a change in velocity. More precisely, to get
acceleration, you divide the change in velocity, by the time that
passed.

###### Asked in Fluid Dynamics

### What is the definition of velocity gradient?

With respect to material being sheared, velocity gradient is the
change dv in relative velocity v between parallel
planes with respect to the change dr in perpendicular
distance r throughout the depth of the material. Velocity
gradient has the same dimensions as rate of shear, which is
reciprocal seconds.

###### Asked in Math and Arithmetic, Physics, Algebra

### What is the acceleration of a car that maintains a constant velocity of 100km per h for 10 seconds?

Acceleration is the time rate of change of velocity. If velocity
is constant, then
acceleration is zero.
Note:
"100 km per h for 10 seconds" is a constant speed, but not
necessarily a constant
velocity, since we're told nothing about the direction. If the
car moves in a perfectly
straight line during those 10 seconds, then its velocity is
constant. If it makes a curve,
then its velocity is not constant even though its speed is, and
there is acceleration.

###### Asked in Physics

### Under what circumstances can an object move in a circular path without being accelerated?

It can't. If there is a change in direction, there is a change
in velocity ("velocity" includes the direction), and therefore, an
acceleration.
It can't. If there is a change in direction, there is a change in
velocity ("velocity" includes the direction), and therefore, an
acceleration.
It can't. If there is a change in direction, there is a change in
velocity ("velocity" includes the direction), and therefore, an
acceleration.
It can't. If there is a change in direction, there is a change in
velocity ("velocity" includes the direction), and therefore, an
acceleration.

###### Asked in Car Selling, Math and Arithmetic, Physics, Kinematics

### What is acceleration and velocity?

Acceleration and velocity
Velocity - which is not quite the same thing as speed -- is the
measure of the rate of change in position. In other words, to
calculate velocity, we divide the change in an object's
displacement -- how far it moved -- by the time it took to move. If
an object moves, say, 100 feet in 10 seconds, its velocity is
100/10 = 10 feet per second (ft/s).
Acceleration is the rate of change of velocity. If an object
increases its speed from, say, 10 ft/s to 60 ft/s in five seconds,
its acceleration is 10 feet per second per second, or 10 feet per
second squared (ft/s2).
How did we arrive at that figure? Divide the change in velocity
by the change in time. The change in velocity is 60 - 10 = 50 ft/s.
The change in time is 5 - 0 = 5 s. Hence, 50/5 = 10 ft/s2.