guringpw

2022-01-06

A state patrol officer saw a car start from rest at a highway on-ramp. She radioed ahead to a patrol officer 30 mi along the highway. When the car reached the location of the second officer 28 min later, it was clocked going $60\frac{mi}{hr}$ . The driver of the car was given a ticket for exceeding the $60\frac{mi}{hr}$ speed limit Why can the officer conclude that the driver exceeded the speed limit?

zesponderyd

Beginner2022-01-07Added 41 answers

We know that the speed is calculated as the ratio of the distance with time. From the Mean Value Theorem, we conclude that if the average speed is greater than the speed limit, then at some point we must have exceeded the speed limit In order to answer the question if the driver has exceeded the speed limit or not, we have to alculate the average speed. Since the time is given in minutes, we have to convert it in hours by dividing it by 60.

$v}_{avg}=\frac{30-0}{\frac{28}{60}-0}\approx 64.3\frac{mi}{h$

Elaine Verrett

Beginner2022-01-08Added 41 answers

Step 1

We know that

From the mean value theorem, we can say that if the average speed is greater than the speed limit, then at some point, we must have exceeded the speed limit.

Here we have to calculate the average speed, to know whether the driver has exceeded the speed limit or not.

We convert the time into hours by dividing the given time by 60, since the given time is in minutes.

Step 2

This shows that driver has exceeded the speed limit.

karton

Expert2022-01-10Added 613 answers

Step 1

Tt is given that the car was travelling at a speed of

The driver of the car was given a ticket for exceeding the speed limit of

The officer can conclude that the driver exceeded the speed limit, by calculating the average speed of the car.

Step 2

Average

As the average speed is

22+64

When a cold drink is taken from a refrigerator, its temperature is 5 degree C. After 25 minutes in a 20 degree C room its temperature has increased to 10 degree C. What is the temperature of the drink after 50 minutes?

How many minutes are there in $2\frac{3}{5}$ hours?

Find the answer for $64$ power $\frac{1}{6}$.

The following law describes the relationship between gas volume and pressure: ________. A)Boyle's law; B)Henry's law; C)Charles' law; D)Dalton's law

If an electric switch is open then no current flows through the circuit.

A)True;

B)FalseThe price elasticity of supply of a good is 0.8. Its price rises by 50 per cent. Calculate the percentage increase in its supply.

How many quarts are in 10 gallons?

When the net force acting on an object is zero, the total momentum of the system will:

A)remain constant;

B)increase with time;

C)decrease with time;

D)None of theseHow many centimeters are in four meters?

A notebook computer has a mass of 2.25 kilograms. About how many pounds does the notebook weigh?

If the dot product of two non-zero vectors is zero, then the vectors A)are parallel to each other. B)are perpendicular to each other. C)can have any orientation. D)are anti-parallel to each other.

Which is longer 5 miles or 10 kilometers?

9 grams is how many milligrams?

How to write $673.5$ in scientific notation?