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Alex787 [66]
3 years ago
11

What are the two thing change when an object is in motion

Physics
1 answer:
yanalaym [24]3 years ago
7 0
The two things that change are position and speed.
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If you kick a tennis ball with 50 N of force and then kick a soccer ball with 50 N of force, explain the difference in their mot
Trava [24]

Answer:

The smaller ball (the tennis ball) will receive a much larger acceleration than the soccer ball of larger mass.

According to Newton's 2nd Law of motion,  (force equals mass times the acceleration imparted)

Since in this case we have the same force (50 N) applied to two different masses (one the tennis ball "m" which has smaller mass than the soccer ball of mass "M"), then the resultant accelerations will be different being the acceleration of the tennis ball  () much larger than the acceleration imparted to the soccer ball (), as can be seen from solving for the acceleration in the previous equation:

8 0
3 years ago
A box is initially at rest on a frictionless inclined plane
Finger [1]
Yesunlesit sat an inclone 
6 0
3 years ago
A ball attached to a string is whirled around in a horizontal circle having a radius r. If the radius of the circle is changed t
LenKa [72]

Answer:

Option D: Four times the original speed.

Explanation:

A centripetal force accelerates a body by changing the direction of the body's  velocity without changing the body's speed.

The speed(v) is therefore constant, thereby making the magnitudes of the of the acceleration and the force constant.

The formula used to calculate the Centripetal force is given below:

F = \frac{mv^2}{r}

where F represents the Centripetal force, m represents the mass of the moving body, v represents the speed or velocity at which the body is moving and r represents the radius.

Making the speed the subject of the formula: v^{2} = \frac{rF}{m} \\

Therefore, when the radius (r) is changed to 4r, i.e r = 4r

speed(v) becomes v^2 = \frac{4rF}{m}

After comparing, the difference between the speeds is Four times the original speed.

5 0
3 years ago
Suppose Tom Harmon17 is standing at the exact center of the Ohio State football field18 on the 50 yard line. The field is 300 fe
nignag [31]

Answer:

a) x = 40 t , y = 39 t ,  z = 6 + 32 t - 16 t ²,   b)     x = 80 feet ,  y = 78 feet , the ball came into the field  

Explanation:

a) This is a projectile launch exercise, where in the x and y axes there is no acceleration and in the z axis the acceleration of the acceleration of gravity, let's write the equations of motion in each axis

Since the cast is in the center of the field, let's place the coordinate system

          x₀ = 0

          y₀ = 0

          z₀ = 6 feet

x-axis (towards end zone,  GOAL zone)

         x = xo + v₀ₓ t

        x = 40 t

y-axis (field width)

        y = y₀ + v_{oy} t

        y = 39 t

z axis (vertical)

        z = z₀ + v_{oz} t - ½ g t²

        z = 6 + 32 t - ½ 32 t²

        z = 6 + 32 t - 16 t ²

b) The player catches the ball at the same height as it came out, so we can find the time it takes to arrive

          z = 6

          6 = 6 + 32 t - 16 t²

          (t - 2)t  = 0

           t=0 s

           t= 2 s

The ball position

          x = 40 2

          x = 80 feet

           

          y = 39 2

          y = 78 feet

the dimensions of the field from the coordinate system (center of the field) are

             x_total = 150 feet

             y _total = 80 feet

so we can see that the ball came into the field

6 0
2 years ago
Please need help on this thank you
lys-0071 [83]
I am pretty sure it is B....
6 0
3 years ago
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