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Nastasia [14]
3 years ago
15

students in a lab are doing experiments involving the motion of objects. they pull an object across a table and use a detector t

o measure the acceleration of the object for the entire time they pull it. The graph shows the data from the detector, with four segments labeled ​

Physics
1 answer:
valentinak56 [21]3 years ago
4 0

The segment of the motion that net force act on the object causing a positive acceleration is segment 1.

<h3>Motion of an object</h3>

The motion of an object occurs when a net force greater than zero acts on the object.

The force on the object is determined from Newton's second law of motion.

F(net) = ma

where;

  • m is mass of the object
  • a is acceleration of the object
<h3>Acceleration of the object from the graph</h3>
  • Segment 1: the acceleration is positive
  • Segment 2: the acceleration is zero
  • Segment 3: the acceleration is negative
  • Segment 4: the acceleration is zero

Thus, the segment of the motion that net force act on the object causing a positive acceleration is segment 1.

Learn more about net force here: brainly.com/question/14361879

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A towrope is used to pull a 1750-kg car, giving it an acceleration of +1.35 m/s ^2. What force does the rope exert?
Klio2033 [76]
Newton's 2nd law of motion:

               Force  =  (mass) x (acceleration)

                           =  (1,750 kg) x (1.35 m/s²)

                           =      2,362.5 Newtons

                              (about 531 pounds)
6 0
3 years ago
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A golf club exerts an average horizontal force of 1000 n on a 0.045 -kg golf ball that is initially at rest on the tee. the club
OlgaM077 [116]
The impulse (the variation of momentum of the ball) is related to the force applied by
\Delta p = F \Delta t
where \Delta p is the variation of momentum, F is the intensity of the force and \Delta t is the time of application of the force. 
Using F=1000 N and \Delta t = 1.8 ms=1.8 \cdot 10^{-3}s, we can find the variation of momentum:
\Delta p = (1000 N)(1.8 \cdot 10^{-3} s)=1.8 kg m/s

This \Delta p can be rewritten as
\Delta p = p_f - p_i = mv_f - mv_i
where p_f and p_i are the final and initial momentum. But the ball is initially at rest, so the initial momentum is zero, and
\Delta p = mv_f
from which we find the final velocity of the ball:
v_f =  \frac{\Delta p }{m}= \frac{1.8 kg m/s}{0.045 kg}=  40 m/s
8 0
3 years ago
A scientist conducting a field investigation records measurements of very low pressure and high relative humidity at the top of
Ivan

Answer:

Please find the answer in the explanation

Explanation:

Given that a scientist conducting a field investigation records measurements of very low pressure and high relative humidity at the top of a mountain.

Since a weather map indicates that a warm front is approaching the mountain, according to the conventional current, the warm front is approaching because the weather must have been in higher relative humidity in cool air.

The warm front is approaching to replace it so that the cool air can conventionally replace the warmth air too.

The condition the scientists will most likely observe at the top of the mountain will be high relative humidity.

5 0
4 years ago
Two charges that are 1 meter apart repel each other with a force of 2 N. If the distance between the charges is increased to 2 m
Savatey [412]

Answer:

b) 0.5 N

Explanation:

From coulomb's law,

F = kq'q/r².................... Equation 1

Where F =force of repulsion between the charges, q' = first charge, q = second charge, r = distance between the charges, k = proportionality constant.

q'q = Fr²/k........................... Equation 2

Given: F = 2 N, r = 1 m, k = 9.0×10⁹ Nm²/C²

Substituting into equation 2

q'q = 2(1)²/(9.0×10⁹)

q'q =  2/9.0×10⁹ C².

If the distance between the charges is increased to 2 meters,

r = 2 m, q'q = 2/9.0×10⁹ C².

Substitute into equation 1

F = 9.0×10⁹(2/9.0×10⁹)/2²

F = 2/4

F = 1/2 = 0.5 N.

The right option is b) 0.5 N

5 0
4 years ago
How does a frequency of a wave relate to the energy of a wave
ch4aika [34]
The higher the frequency of a wave the more energy the wave has.
4 0
3 years ago
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