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
Ludmilka [50]
2 years ago
13

Cars A and B travel along the same straight track. Car A is located at position s1 at clock reading t1 and it maintains a consta

nt speed of v1. Car B is located at position s2 < s1 at clock reading t2, and it maintains a constant speed of v2 > v1. Find an expression for the clock reading at which car B will overtake car A. Find also an expression for the position at which car B overtakes car A. Evaluate your expressions for the values s1 = 0.75 meters, t1 = 0.00 seconds, v1 = 0.38 m s−1 , s2 = 0.0 meters, t2 = 0.08 seconds, and v2 = 0.78 m s−1 .
Physics
1 answer:
m_a_m_a [10]2 years ago
7 0

Answer:

a) t=\frac{S1-V1*t1 - S2 + V2*t2}{V2-V1}

b) X = S2 - V2*t2 + V2*\frac{S1-V1*t1 - S2 + V2*t2}{V2-V1}

c) t = 2.031s      X = 1.52m

Explanation:

Let X1 be position of car A as a function of time and X2 be the position of car B as a function of time:

X1 = Xo1 + V1*t     If we evaluate this expression at t=t1

S1 = Xo1 + V1*t1    Solving for Xo1 we get its initial position at t=0:

Xo1 = S1 - V1*t1    

Similarly for car B:

Xo2 = S2 - V2*t2

Now, to find the instant when car B overtakes car A:

X1 = X2   Replacing their functions in time:

(S1 - V1*t1) + V1*t  = (S2 - V2*t2) + V2*t   Solving for t:

t=\frac{S1-V1*t1 - S2 + V2*t2}{V2-V1}   This is the instant when B reaches A

If we replace this expression in either X1 or X2 expression, we get that position:  X1 = X2

X1 = X2 = X = S2 - V2*t2 + V2*\frac{S1-V1*t1 - S2 + V2*t2}{V2-V1}

If we evaluate these two expressions with the given values:

t = 2.031s  and   X = 1.52m

You might be interested in
In what ways do people use natural resources? What problems does use of those resources cause?
Lunna [17]

Answer:

The Challenges of Using Natural Resources

Extracting, processing and using natural resources can cause environmental problems such as: air, land and water pollution; disruption or destruction of ecosystems; and a decrease in biodiversity.

4 0
3 years ago
Knowledge of projectile motion might help you aim a basketball when you throw it so it is more likely to go into the basket. tru
8_murik_8 [283]

Answer: True.

Explanation:

You would be able to visualize the basketballs height going up and when it sinks down into the hoop.

5 0
2 years ago
If
nadya68 [22]

Answer:

hhjjkkkksksksjskkskakakkskskksksksoao

Explanation:

hiiii look forward but I don't know how to do it

8 0
3 years ago
If an object is being pulled by two forces, one 4 N to the left and the other 2 N to the right, what is the net
nika2105 [10]

Answer:

2N

Explanation:

subtract  rthe two forces to see which is greater

4-2=2

6 0
3 years ago
What type of image is formed by a mirror if m= -6.1?
mrs_skeptik [129]
I Think The answer is a I hope it helps My friend Message Me if I’m wrong and I’ll change My answer and fix it for you
5 0
2 years ago
Other questions:
  • Why is there a universe at all
    10·1 answer
  • What is the total resistance of 3 resistors of 3ohms added together in series?
    9·1 answer
  • A base is a substance that produces hydrogen ions in a water solution
    6·1 answer
  • Which type of wave experiences a change in speed when entering a new medium?
    13·2 answers
  • The four balls have different masses and speeds.
    11·2 answers
  • Please I really need this !! Potassium loses electrons when it reacts with oxygen. Which statement is true of potassium in this
    14·2 answers
  • State Newton's first law of motion​
    6·2 answers
  • Equilibrium of forces
    5·2 answers
  • A sharp knife cut things easily​
    15·1 answer
  • Two forces with magnitudes of 6 pounds and 18 pounds are applied to an object. The magnitude of the resultant is 13 pounds. Find
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!