A handball player hit a ball with a mass of 0.25 kg. The ball travels at a velocity of 15 m/s for 0.75 s until it hits the wall.

What was the average acceleration of the handball?

A.

20 m/s²

B.

0.05 m/s

C.

20m/s

D.

0.05 m/s²

Which is a compound machine? a broom a screwdriver a slide a pair of scissors

Which of the following prefixes represents the biggest number? a. kilo b. hector c. centi d. milli

A block moving to the right on a level surface with friction is pulled by an increasing horizontal force also directed to the right.

Why are glass fibers stronger than bulk glass?

A closed, nonconducting, horizontal cylinder is fitted with a nonconducting, frictionless. floating piston which divides the cylinder into Sections A and B. The two sections contain equal masses of air, initially at the same conditions.

A database that is flexible and easy to use was recently installed. the data is stored in rows and columns much like a spreadsheet. what type of database must have been installed?

What did johannes kepler contribute to the study of planets

Baseboard heaters are basically electric resistance heaters and are frequently used in space heating. A homeowner claims that her 5-year-old baseboard heaters have a conversion efficiency of 100%.

Explain why the brakes of a car get much hotter than the brakes of a bicycle?

If 10,000 J of work was done to raise a 225 kg box, how high was the box raised?