1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
EastWind [94]
3 years ago
10

3. What average net force is required to stop a 7 kg shopping cart in 2 s if it's initially

Physics
1 answer:
Mashcka [7]3 years ago
5 0

Answer:

The force required to stop the shopping cart is, F = 12.25 N

Explanation:

Given data,

The mass of the shopping cart, m = 7 kg

The initial velocity of the shopping cart, u = 3.5 m/s

The final velocity of the shopping cart, v = 0 m/s

The time period of acceleration, t = 2 s

The change in momentum of the cart,

                                       p = m(u - v)

                                          = 7 (3.5 - 0)

                                          = 24.5 kg m/s

The force is defined as the rate of change of momentum. To stop the shopping cart, the force required is given by the formula

                                            F = p / t

                                                = 24.5 / 2

                                                = 12.25 N

Hence, the force required to stop the shopping cart is, F = 12.25 N

You might be interested in
This picture represents the electric field diagram between two particles with static charges. Do the two particles have the same
dexar [7]

Answers:

No, They will attract each other, B, and neither direction

Explanation:

Since the two already presented particles in the diagram represent both opposing charges due to the direction of the arrows (the arrows facing away from the particle shows a positive charge and the particles facing towards the particle show a negative charge), not only because of this but as the arrows between the particles show an attracting magnetic field, then it can be concluded that the particles will attract to each other and if another particle was introduced into the diagram of a positive charge, then it would attract to the negatively charged particle. If you have any questions or need further explanation, please comment below. E2021, have a great day.

7 0
3 years ago
If the mass of one of two objects is increased, the force of attraction between them will
Sonja [21]
It will increase..........................
5 0
3 years ago
Which of the following is NOT an example of a correct interaction between the
makkiz [27]

Answer:

WE NEED ANSWER CHOICES

Explanation:

3 0
3 years ago
Freud believes that defense mechanisms are reactions people have to protect themselves from uncomfortable feelings. the article
makkiz [27]

Answer:

A: Anxious

Explanation:

got a 100% of Edge

6 0
2 years ago
Help please:Calculate the mechanical energy of a bird flying at a speed of 10 m / s at an altitude of 15 m. If its mass is 150 g
Sonja [21]

Mass of the bird(m) = 150 g = 0.15 kg

Speed (v) = 10 m/s

Kinetic Energy = \frac{1}{2}m v^{2} = \frac{1}{2} 0.15 (10)^{2} = 7.5 J

Altitude (h) = 15 m

Gravitational Potential Energy = (0.15)(9.81)(15) = 22.0725 J

Mechanical Energy = Kinetic Energy + Potential Energy = 7.5 + 22.0725

= 29.5725 J

4 0
2 years ago
Other questions:
  • Kevin goes bowling. Whenever he bowls the ball, he transfers energy from his hand to the bowling ball. The amount of energy befo
    9·1 answer
  • When a river overflows its banks, it deposits sediment over a broad, flat area of land on both sides of the river. This broad fl
    8·1 answer
  • The back wall of a home aquarium is a mirror that is a distance of 46.0 cm away from the front wall. The walls of the tank are n
    8·1 answer
  • Why is a control group important?
    14·1 answer
  • Particles 1 and 2 of charge q1 = q2 = +3.20 × 10−19 C are on a y axis at distance d = 17.0 cm from the origin. Particle 3 of cha
    12·1 answer
  • | The electric field 5.0 cm from a very long charged wire is (2000 N/C, toward the wire). What is the charge (in nC) on a 1.0-cm
    8·1 answer
  • Neylin engineered (drove) a horse train from Miami and traveled toward New York. 14
    5·1 answer
  • What happens when a cow eats a taco?
    14·1 answer
  • A golfer strikes a 0.059-kg golf ball with a force of 290 N. If the ball moves with a velocity of 69 m/s,
    15·1 answer
  • A hiker yells out "Hello!" into a canyon. If the echo of their voice
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!