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Damm [24]
3 years ago
12

- With the device starting from a still position (0 m/s), you drop it, allowing gravity to accelerate it towards the ground at 9

.8 m/s2. Assuming it takes 1.5 seconds for the device to hit the ground, what is it’s velocity? [V = a*t]
Physics
1 answer:
IrinaVladis [17]3 years ago
3 0
Starting velocity (u)=0
acceleration (a) = 9.8
time (t) = 1.5
final velocity (v) =?

v=at+u
v=9.8(1.5)+0
v=14.7m/s2
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Which change will cause the gravitational force between a baseball and a soccer ball to increase? Select three options.
Sholpan [36]

moving the balls closer together

pumping more air into the soccer ball

putting the baseball in a plastic case

Explanation:

The gravitational force between the baseball and the soccer ball will increase if the moving balls are closer together, pumping more air into the soccer ball and putting the baseball in a plastic case.

According to Newton's law of universal gravitation "the force between two masses is proportional to the magnitude of their mass and inversely proportional the square of the distances between them". It is mathematically expressed as:

   Fgravity = G\frac{M_{1} M_{2}  }{r^{2} }

Where G is a constant called the universal gravitation constant.

           M1 is the mass of particle 1

            M2 is the mass of particle 2

             r is the distance between them.

The force of gravity increases as their masses increase and also as the distance between the bodies reduce.

From the options:

Moving the balls closer together                       distance reducing

Pumping more air into the soccer ball               mass increasing

Putting the baseball in a plastic case                mass increasing

Learn more:

Universal Gravitation brainly.com/question/1724648

#learnwithBrainly

5 0
2 years ago
What happens to the direction of an object as an unbalanced force acts on<br> it? Give an example
Pie

Answer:

When an unbalanced force acts on a body the side with the greater force's dircetion makes the object move along its direction

Also to find the net force acting on the bofldy you can subtract the two force acting on the body

In case of balanced force the net force will always be 0

5 0
2 years ago
Read 2 more answers
A sled is accelerating down a hill at a rate of 1 m s2 . If the mass of the sled is suddenly cut in half and the net force on th
mihalych1998 [28]
We have that F=ma from the 2nd Newton law where F is the force, m is the mass and a is the acceleration. Suppose we have that F' is the new force and m' is the new mass. Then, we have that a'=F'/m' still, by rearranging Newton's law. We are given that F'=2F and m'=m/2. Hence,
a'= \frac{2F}{ \frac{m}{2} } = \frac{4F}{m} = 4\frac{F}{m}
But now, we have from F=ma, that a=F/m and we are given that a=1m/s^2.
We can substitute thus, a'=4a=4*1m/s^2=4m/s^2.
4 0
3 years ago
A cardio kickboxing class challenges 3 things. List them.
bagirrra123 [75]

Answer:

In a cardio kickboxing class, you will learn proper form for the famous jab, hooks,crosses, uppercuts, back kicks, front kicks.

Explanation:

6 0
2 years ago
What is the current if a charge of 25 coulombs passes in 5 seconds?
Jobisdone [24]

Answer: 5 amps

Explanation: I = Q/t

8 0
3 years ago
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