Please help me with this. Finding speed.

Physics

2 answers:

JulijaS [17]3 years ago

7 0

The speed is 80 m/h you find it by dividing the distance by time

Neporo4naja [7]3 years ago

4 0

What you need is a definition of average speed. Here it is:

   Average speed = (distance covered) / (time to cover the distance) .

For the race car in the question:

Average speed = (200 mile) / (2.5 hour)

   = (200 / 2.5) (mile/hour)

   =    80 miles per hour .

That doesn't seem all that fast for a race-car.
But the math is bullet-proof.

You might be interested in

Help help help help help

nalin [4]

I am not sure on the rest but the answer to question 4 is volts. sorry i couldn’t be of more help!

3 0

3 years ago

Explain how power is determined within the context of electricity/circuitry.

nalin [4]

In the context of electricity the equation for power would be as follows:

V*I=W
The V stands for voltage. The I stands for current. The W stands for power.
The reason why power is symbolized by "W" is because it was named after James Watts.

8 0

3 years ago

A crate is pushed up a ramp at an angle of 30 degree by a 300 N force. How much power is spent in raising the crate to a height

kotegsom [21]

Answer:

You use a force of 150 N to push a 30 kg crate across the floor for a distance of 10 m. If the crate is moving at a speed of 5 m/s…

7 0

3 years ago

How does the graph of velocity vs. time look for something with a constant positive acceleration?

Pie

Answer:

The correct answer is option b.

Explanation:

In velocity vs time graph, vertical axis represent velocity vector and horizontal axis represents time. The slope of the line obtained in this graph is equal to the acceleration.

$Slope= \frac{Velocity}{Time}=Acceleration$

If the line is straight makes an acute angle with horizontal axis then it is considered as positive acceleration.
If the line is straight makes an obtuse angle with horizontal axis then it is considered as negative acceleration or deceleration.