Andy is waiting at the signal. As soon as the light turns green, he accelerates his car at a uniform rate of 8.00 meters/second2. What is the displacement of Andy’s car after 30.0 seconds?

Answers

Answer 1

Answer:

Answer:

7200 m

Explanation:

This problem is an example of an uniformly accelerated motion, in which the acceleration remains constant. As such, the formula for the displacement is:

D(t) = D₀ + v₀*t + 0.5*a*t²

Where D₀ is the initial displacement, v₀ is the initial velocity (in this case it's 0 m/s), a is the aceleration (8 m/s²) and t is the time, in seconds.

Using a t=30.0 s, we're left with:

D(t) = 0 m + 0 m/s * 30.0 s + 0.5 * 8.00 m/s² * (30.0 s)²

D(t) = 0.5 * 8.00 m/s² * (30.0 s)²

D(t) = 7200 m

Answer 2

Answer: 1200 m/s squared, assuming the initial velocity is 0.

Related Questions

What is the half-life of a radioisotope if 25.0 grams of an original 200.-gram sample of the isotope remains unchanged after 11.46 days?(1) 2.87 d (3) 11.46 d(2) 3.82 d (4) 34.38 d
Which letter (a–f) represents potential energy (ΔH) of the products?Which letter (a-f) represents potential energy (ΔH) of the activated complex?Which letter (a-f) represents potential energy (ΔH) of the reactants?
Describe What are some possible benefits of single-stream recycling vs. regular recycling?
Is freezing water a physical or chemical change
What is a solution for deforestation (full sentences please)

A voltaic cell spontaneously converts chemical energy to(1) electrical energy (3) mechanical energy
(2) geothermal energy (4) nuclear energy

Answers

1 - Electrical energy
A voltaic cell is an electrochemical cell that generates electricity through redox reactions.

(1) electrical energy is your answer.

A sample of gas at 300 K has a volume of 2.0 liters. At what temperature will the volume decrease to 1.0 liter if the pressure is kept constant?

Answers

Answer : The temperature will be, 150 K

Explanation :

Charles' Law : This law states that volume of gas is directly proportional to the temperature of the gas at constant pressure and number of moles.

$V\propto T$ (At constant pressure and number of moles)

or,

$(V_1)/(T_1)=(V_2)/(T_2)$

where,

$V_1$ = initial volume of gas = 2.0 L

$V_2$ = final volume of gas = 1.0 L

$T_1$ = initial temperature of gas = 300 K

$T_2$ = final temperature of gas = ?

Now put all the given values in the above formula, we get the final temperature of gas.

$(2.0L)/(300K)=(1.0L)/(T_2)$

$T_2=150K$

Therefore, the temperature will be, 150 K

pv/t=c
Therefore

v/t=c
2/300=1/t2
t2=150K

1. What is the empirical formula for a compound containing 63.8% N and 36.2% O?a. N₂O₅
b. N₂O₃
c. NO₂
d. NO
e. N2₂O

Answers

$M\ N_2=28g/mol\n 63,8\%--28g\n 100\%--x\n x=43,89g$

43,89g≈44g
44g == 2x 14g (N) + 1x 16x(O)
M N₂O = 44g

Thirty points to who ever can answer this problemDuring an experiment, 104 grams of calcium carbonate reacted with an excess amount of hydrochloric acid. If the percent yield of the reaction was 80.15%, what was the actual amount of calcium chloride formed?
CaCO3 + HCl → CaCl2 + CO2 + H2O

A. 90.1 grams
B. 92.4 grams
C. 109.2 grams
D. 115.3 grams

Answers

Answer:

B. 92.4 g

Explanation:

the balanced equation for the reaction is as follows

CaCO₃ + 2HCl ---> CaCl₂ + CO₂ + H₂O

molar ratio of CaCO₃ to CaCl₂ is 1:1

number of CaCO₃ moles reacted - 104 g / 100 g/mol = 1.04 mol

therefore number of CaCl₂ moles reacted - 1.04 mol

mass of CaCl₂ expected to be formed = 1.04 mol x 111 g/mol = 115.44 g

percentage yield = actual yield / theoretical yield x 100 %

theoretical yield = 115.44 g

percentage yield = 80.15 %

substituting these values in the above equation

80.15 % = actual yield / 115.44 g x 100 %

actual yield = 92.5 g

therefore answer is B. 92.4 g

the formula C=5/9 (F - 32) can be used to convert a temperature from degrees Fahrenheit to degrees Celsius. which of the following is closest In value to 5/9?

Answers

F = $(9)/(5) c$ +32

Enter the temperature into the degrees Celsius (C) equal to 113∘ Fahrenheit (F). The formula F = 1.8°C + 32 allows you to find the Fahrenheit (F) temperature for a given Celsius (C) temperature.

Given: C = $\frac{5}9}$ (F - 32)