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
11Alexandr11 [23.1K]
3 years ago
10

A ball that rolls on the ground is initially propelled with a speed of 45 km / h and after 10 seconds it stops. Assuming you los

t speed constantly, then: a) Calculate the acceleration b) Calculate the distance traveled.
Physics
1 answer:
solmaris [256]3 years ago
5 0

Answer:

a) -1.25 m/s²

b) 62.5 m

Explanation:

Convert km/h to m/s:

45 km/h × (1000 m/km) × (1 h / 3600 s) = 12.5 m/s

a = Δv / Δt

a = (0 m/s − 12.5 m/s) / 10 s

a = -1.25 m/s²

Δx = ½ (v + v₀) t

Δx = ½ (0 m/s + 12.5 m/s) (10 s)

Δx = 62.5 m

You might be interested in
All are examples of electric forces except _________. A. a neutron pushing on another neutron B. an electron pushing on a proton
Contact [7]

Answer:

A) a neutron pushing on another neutron.

Explanation:

Neutrons have no charge, therefore, there is no electric force among them. Protons and electrons on the other hand do have electric charge (electrons negative charge and protons positive charge) that generate electric forces between them that can be repelling forces (if the charges are of the same sign), or attractive forces (if the charges are of opposite signs).

6 0
4 years ago
1) A man leans against the wall and...
dolphi86 [110]

Answer:

I thinks its a, but its really about gravity im not sure

Explanation:

:)

4 0
3 years ago
The tires of a car support the weight of a stationary car. If one tire has a slow leak, the air pressure within the tire will __
Kipish [7]

Answer:

The tires of a car support the weight of a stationary car. If one tire has a slow leak, the air pressure within the tire will decrease with time, the surface area between the tire and the road will increase with time, and the net force the tire exerts on the road will be constant with time.

Explanation:

when a wheel has an air leak, it means that the inside of the tire has less air, which means that there will be less air pushing the walls of the tire so that the air pressure decreases.

On the other hand, the tire begins to deform due to lack of air which increases the area of ​​contact with the floor.

As the weight of the car remains constant and the air has a negligible mass the force towards the road will be the same

4 0
4 years ago
What is the amount of charge a capacitor can store per volt of potential difference?
sladkih [1.3K]

The amount of charge a capacitor can store per volt of potential difference is called the capacitance of the capacitor.

<h3>What is the capacitance?</h3>

The capacitance has to do with the amount of charge that is stored by a capacitor. We know that a capacitor is a device that can be used to store electric charges. We have in it, two capacitors separated by a dielectric material.

Hence, the amount of charge a capacitor can store per volt of potential difference is called the capacitance of the capacitor.

Learn more about capacitor:brainly.com/question/17176550

#SPJ1

4 0
2 years ago
Read 2 more answers
Why are the meters squared in the formula to calculate acceleration?
lianna [129]

Answer:

During acceleration, you are moving across a distance over a time, but also increasing how fast we are doing it. Therefore, it means by how many meters per second the velocity changes every second

Explanation:

8 0
4 years ago
Other questions:
  • If there is no crosswalk or limit line near an intersection, you should stop __________.
    9·2 answers
  • How much more light can the James Webb Space Telescope (with its 6-m diameter mirror) gather than the Hubble Space Telescope (wi
    12·1 answer
  • The force required to compress a non-standard spring as a function of displacement from equilibrium x is given by the equation f
    13·1 answer
  • Liz rushes down onto a subway platform to find her train already departing. she stops and watches the cars go by. each car is 8.
    5·1 answer
  • About how long does it take the sun to rotate once about its axis?
    12·1 answer
  • If John has 8 apples and his train is 7 minutes early. Calculate the mass of sun at 12:12 pm
    7·1 answer
  • Which of these describes the heating element of a toaster oven?
    15·2 answers
  • A water balloon launcher uses an elastic band with a spring constant of 115 N/m. To use the launcher, you stretch the band back
    10·2 answers
  • What is the derivation for Newtons Law of universal gravitation?​
    15·1 answer
  • If a star is moving away from you at constant speed, the absorption lines in its spectrum will.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!