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Gala2k [10]
3 years ago
9

_____ is amount of “ground” an object moves from its starting point and ______ is how much “ground” and object covers in total.

Physics
2 answers:
laiz [17]3 years ago
7 0

Displacement is the amount of "ground" and object moves from it starting point and distance is how much "ground" an object covers in total. Displacement by definition is moving of something from its place or position and distance by definition is the amount of space between two things (in this case the starting position and ending position).ΥΤ-ΤΟΝΙХWΙLSΟΝ

Reil [10]3 years ago
7 0

The key word in the first statement is AMOUNT of "ground" so the quantity but not the direction is important. So the first answer is Distance. Displacement  is how much “ground” and object covers in total.


The answer is B.


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A tennis player tosses a tennis ball straight up and then catches it after 2.00 s at the same height as the point of release. (a
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Answer:

Part a)

a = -9.81 m/s/s

Part b)

v = 0

Part c)

v = 9.81 m/s

Part d)

H = 4.905 m

Explanation:

Part a)

During the motion of ball it will have only gravitational force on the ball

so here the acceleration of the ball is only due to gravity

so it is given as

a = g = 9.81 m/s^2

Part b)

As we know that ball is moving against the gravity

so here the velocity of ball will keep on decreasing as the ball moves upwards

so at the highest point of the motion of the ball the speed of ball reduce to zero

v_f = 0

Part c)

We know that the total time taken by the ball to come back to the initial position is T = 2 s

so in this time displacement of the ball will be zero

\Delta y = 0 = v_y t + \frac{1}{2} at^2

0 = v_y (2) - \frac{1}{2}(9.81)(2^2)

v_y = 9.81 m/s

Part d)

at the maximum height position we know that the final speed will be zero

so we will have

v_f^2 - v_i^2 = 2 a d

here we have

0 - (9.81^2) = 2(-9.81)H

H = 4.905 m

4 0
3 years ago
A 90.0-kg man runs at a constant speed of 11.5 m/s. what is his kinetic energy?
harina [27]

The kinetic energy possessed by the man is 517.5 Joules.

<u>Given the following data:</u>

  • Mass = 90.0 kg
  • Velocity = 11.5 m/s.

To find the kinetic energy of the man:

Kinetic energy is an energy that is possessed by a physical object or body due to its motion.

Mathematically, kinetic energy is calculated by using the formula;

K.E = \frac{1}{2} MV^2

<u>Where:</u>

  • K.E is the kinetic energy.
  • M is the mass of an object.
  • V is the velocity of an object.

Substituting the given values, we have;

K.E = \frac{1}{2} × 90 × 11.5

K.E = 45 × 11.5

<em>Kinetic energy = 517.5 Joules.</em>

Therefore, the kinetic energy possessed by the man is 517.5 Joules.

Read more: brainly.com/question/23153766

8 0
3 years ago
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