1. A student dropped a ball from the top of a table. The ball's motion was recorded by a motion sensor above the ball. The following data were
recorded. What most likely happened after 0.5 s? (P.4A).
Time (s)
0
Distance (m)
0
.05
.1
2
.3
.20
.45
.80
.4
.5
.80

John throws .4 kg ball with velocity of 18 m/s. hits .2 kg bottle and bottle flies 25 m/s. how fast is ball traveling after hitting the bottle?

More solar radiation is absorbed by earth’s surface than by

(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?