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
Oxana [17]
3 years ago
11

A boy is standing in the middle of a field when his friend sprints past him with a speed of 4 m/s. At the moment his friend pass

es him, he starts running with an acceleration of 0.8 m/s2.
1. How long will it take him to catch his friend?



2. How far will he have to run?



3. How fast will he be going?
Physics
1 answer:
algol133 years ago
5 0

Answer:

Explanation:

1)  ½(0.8)t² = 4t

        0.4t² = 4t

         0.4t = 4

              t = 10 s

2)           d = vt = 4(10) = 40 m

d =  ½atⁿ = ½(0.8)10² = 40 m

3)    v = at = 0.8(10) = 8 m/s

You might be interested in
Question 6
Lana71 [14]

Answer:

<h3>The answer is 5 g/mL</h3>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question

mass = 150 g

volume = 30 mL

We have

density =  \frac{150}{30}  \\

We have the final answer as

<h3>5 g/mL</h3>

Hope this helps you

6 0
4 years ago
Out of solid and liquid, in which object is the effect of gravity more? why?​
ollegr [7]

Answer:

Effect of gravity is equal on both solids and liquids.

Explanation:

gravity is independent of the state of matter.

6 0
1 year ago
Consider four different oscillating systems, indexed using i = 1 , 2 , 3 , 4 . Each system consists of a block of mass mi moving
Rzqust [24]

Answer:

The order is 2>4>3>1 (TE)

Explanation:

Look up attached file

4 0
4 years ago
A test tube of length L and cross-sectional area A is submerged in water with the open end down so that the edge of the tube is
Margaret [11]

Answer:

if we measure the change in height of the gas within the had and obtain a straight line in relation to the depth we can conclude that the air complies with Boye's law.

Explanation:

The air in the tube can be considered an ideal gas,

           P V = nR T

In that case we have the tube in the air where the pressure is P1 = P_atm, then we introduce the tube to the water to a depth H

For pressure the open end of the tube is

         P₂ = P_atm + ρ g H

Let's write the gas equation for the colon

            P₁ V₁ = P₂ V₂

            P_atm V₁ = (P_atm + ρ g H) V₂

             V₂ = V₁    P_atm / (P_atm + ρ g h)

If the air obeys Boyle's law e; volume within the had must decrease due to the increase in pressure, if we measure the change in height of the gas within the had and obtain a straight line in relation to the depth we can conclude that the air complies with Boye's law.

The main assumption is that the temperature during the experiment does not change

6 0
3 years ago
NEED ANSWER ASAP WHOEVER ANSWERS THE QUICKEST ILL GIVE BRAINILEST ANSWER!!!
zhenek [66]
A i think because it’s talking about covering ground, a faster car would cover more ground.
7 0
3 years ago
Other questions:
  • Jay bought a toy car. To make the car move, he must turn a key attached to a spring. Turning the key winds the spring tight. The
    13·2 answers
  • In most cases, magma differentiation (a.k.a. fractional crystallization produces magma with higher ___________ content than the
    12·1 answer
  • Which of the following occurs when charging by rubbing? A. Electrons are created through friction. B. Protons combine with neutr
    12·2 answers
  • A magnetic field is created by a charged particle that is
    10·2 answers
  • A woman has a mass of 55kg on earth, what is her mass on the moon​
    5·1 answer
  • A thin cylindrical pressure vessel of 250 mm diameter and 5 mm thickness is rigidly attached at one end. Determine maximum shear
    9·1 answer
  • You have four fixed-volume containers at STP . Container A has 0.5 mol of gas in 11.2 L. Container B has 2 mol of gas in 22.4 L.
    9·1 answer
  • 3. The figure below shows the motion of a car. It starts from the origin, O travels 8m
    9·1 answer
  • CITEC Option. Work done will if no net force act on the body. (a) maximum (b) minimum (c) zero (d) all of above​
    13·1 answer
  • F a person walks 1 Km north, 5 km west south, and 7 km east, find the resultant displacement vector​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!