The chart shows data for an object moving at a constant acceleration. Which values best complete the chart? Time (s) Velocity (m/s) X: 0 Y: 0 Z: 0 0 1 2. 3 0 X Y Z O X: 2 Y: 4 Z: 6 OX: 3 Y: 3 Z: 3 OX: 1 Y: 5 Z: 8

15. give an example for some particles or waves that are moving faster than light in everyday life 16. what is a laser? 17. what is an oscilloscope? 18. what does it means practically that nothing is faster than light in vacuum? 19. what is vacuum?

Alead ball is dropped into a lake from a diving board 5m above the water . it hits the water with a certain velocity and then sink with constant velocity in bottom . it reaches the bottom 5 second after it is dropped if g= 10m/s2 . find depth of the lake and average velocity of the ball ?

Aweight lifter raises a 1600 n barbell to a height of 2.0 meters. how much work was done? w = fd a) 30 joules b) 3000 joules c) 320 joules d) 3200 joules