Question

A book is given a sudden push to make it slide along a desktop. If the initial speed of the slide is doubled, by what factor is the distance that the book slides changed?

0.5

0.25

2.0

4.0

Answer 1

An extremely elastic ball loses only 20 percent of its kinetic energy in a bounce. If such a ball were dropped from a height of 5.0 m, how high would the ball bounce?

1.0 m

2.0 m

4.0 m

5.0 m

Answer 2

@Directrix

Answer 3

@Directrix

Answer 4

@Michele_Laino