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
melisa1 [442]
3 years ago
9

A cross-country runner accelerates from 4 m/s to 7 m/s over the course of 5 seconds. What is the runner's average rate of accele

ration? A. 0.3 m/s/s  B. 0.6 m/s/s C. 1.4 m/s/s D. 2.2 m/s/s
Physics
1 answer:
fredd [130]3 years ago
4 0
B. 0.6 for show
hopefully this works lemme know



You might be interested in
If we rub two neutral objects​
Brilliant_brown [7]

Answer:

electrons can be knocked loose from one object and picked up by the other. The object that gains electrons becomes negatively charged, while the object that loses electrons becomes positively charged.

7 0
1 year ago
What types of changes in motion cause acceleration?
xxTIMURxx [149]

Answer:

Change in velocity and direction over a specific period of time.

Explanation:

In physics, acceleration can be defined as the rate of change of the velocity of an object with respect to time.

This simply means that, acceleration is given by the subtraction of initial velocity from the final velocity all over time.

Hence, if we subtract the initial velocity from the final velocity and divide that by the time, we can calculate the acceleration of an object.

Mathematically, acceleration is given by the equation;

Acceleration (a) = \frac{final \; velocity  -  initial \; velocity}{time}

a = \frac{v  -  u}{t}

Where,

a is acceleration measured in ms^{-2}

v and u is final and initial velocity respectively, measured in ms^{-1}

t is time measured in seconds.

Hence, the types of changes in motion that cause acceleration is a change in velocity and direction over a specific period of time.

6 0
3 years ago
When an object is thrown upwards and reaches its maximum height its speed is: a. Greater than the initial
suter [353]

Answer:

Option d

Explanation:

When we throw an object in the upward direction, we provide it with certain initial velocity due to which it covers a certain distance up to the maximum height.

While the object is moving in the upward direction, its velocity keeps on reducing due to the acceleration due to gravity which acts vertically downwards in the opposite direction thus reducing its velocity.

So, the maximum height attained by the object is the point where this upward velocity of the body becomes zero and after that the object starts to fall down.

5 0
3 years ago
Assume that you can drive at a constant speed of 100 kilometers per hour. suppose you started driving from the sun. how long wou
belka [17]
The Sun is 149.6 million kilometers from the earth.
There are 8760 hours in a year. 
876000 km are traveled in a year
It would take 170.776 years to reach the sun, or 171 years rather
4 0
2 years ago
CHECK MY WORK
Zina [86]
I believe you are right. pH is the concentration of H+. Therefore the more acidic the more H+.
3 0
3 years ago
Other questions:
  • An automobile starts from rest and travels down a straight section of road. The distance s (in feet) of the car from the startin
    5·1 answer
  • The average speed of a car that travels 500 km in 5 hours is
    7·1 answer
  • Please help me:(<br> I need help with this question
    12·1 answer
  • PHYSICAL SCIENCE: What are some methods used to control the types and sources of pollution?
    11·1 answer
  • The number of revolutions of two pulleys is inversely proportional to their diameters. If a 24-inch diameter pulley making 400 r
    8·2 answers
  • A block of mass m sits at rest on a rough inclined ramp that makes an angle θ with the horizontal. What must be true about force
    10·1 answer
  • ¿A que velocidad viaja la luz?
    5·2 answers
  • Kinetic energy is the energy of an object in motion. Potential energy is the energy associated with an object
    11·1 answer
  • A 5kg object accelerates from 3m/s to 7m/s in 5 seconds. Calculate the force required
    9·1 answer
  • A vector is something with a magnitude and direction. Explain in 1 or 2 sentences the analogy between a vector and the voltage d
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!