The ratio of distance covered by an object in a specific direction and the time taken to cover the distance is known as the velocity of the object. Mathematically, the expression for the velocity is,

v = d/t

Here,

d is the distance covered.

t is the average time taken to cover the distance.

Then the first velocity of the car at 0.25 m is,

v1 = d1/t1

v1 = 0.25 / t1

here, t1 is the average time for first distance.

And the second velocity of the car with four washers at the 0. 50 m mark is,

v2 = d2/t2

v2 = 0.50 /t2

here, t2 is the average time for the second distance.

Thus, we can conclude that the first and second velocities of the car are 0.25/t1 and 0.50/t2 respectively.

Learn more about the velocity here:

brainly.com/question/862972

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3 years ago

The orbital period of a satellite is 2 x 106 s and its total radius is 2.5 x 1012 m.

MrMuchimi

Explanation:

Orbital period = 2 x 10⁶s

Total radius = 2.5 x 10¹²m

Unknown:

Tangential speed of the satellite = ?

Solution:

The tangential speed simply expresses the rate at which the distance moves around its orbit with time.

Since the orbit is taken to be circular;

Tangential speed = $\frac{2 x pi x r}{t}$

r is the radius

t is the time or orbital radius

Tangential speed = $\frac{2 x 3.14 x 2.5 x 10¹²}{2 x10[tex]^{6}$ }[/tex]

Tangential speed = 7.85 x 10⁶m/s

Learn more:

Circular motion brainly.com/question/2562955

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7 0

3 years ago

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