A 60kg girl standing on rollerskates (with no friction between the skates and the ground) throws a 5kg medicine ball to the right with a speed of 6m/s. Find the recoil velocity of the skater.

In which would you expect the best transmission of light? a. hot gas b. a glass of very cold liquid c. colored cloth

What weather could create the best surfing waves? A. Weak winds that blow for short periods of time with a short fetch. B. Strong winds that blow for short periods of time with a short fetch. C.

Suppose that you want to move a heavy box with mass 30.0 kg across a carpeted floor. You try pushing hard on one of the edges, but the box does not move. Suppose that you are pushing against the box from an angle 30.

How does the wavelength of a sound affect the way it moves around corners

What is the center of atom called?

A spider crawling across a table leaps onto a magazine blocking its path. The initial velocity of the spider is 0.870 m/s at an angle of 35.0° above the table, and it lands on the magazine 0.0770s after leaving the table. Ignore air resistance.

A force of 5 N accelerates an object. The object's mass is 50 g. What is the acceleration of the object? (Formula: F=ma)

Which is a legacy of the enlightenment?

An instrument for observing very small objects is a. micrometer spectroscope microscope magnoscope

Who was copernicus and what have he done for science?