With decreasing speed. The three balls shown are dropped from a bench.
8
aluminium
lead
wood
Which balls have the same acceleration?
А
B
aluminium and lead only
aluminium and wood only
lead and wood only
aluminium, lead and wood
с
D

Figure 9 on page 362 shows various motions of balls. the curved path followed by the yellow ball in b in picture b is result of a) inertia b) centripetal motion c) gravity and horizontal velocity d) linear motion

Apotter's wheel moves uniformly from rest to an angular speed of 0.20 rev/s in 32.0 s. (a) find its angular acceleration in radians per second per second. rad/s2 (b) would doubling the angular acceleration during the given period have doubled final angular speed?

An element becomes a positively charged ion when itloses protons. loses electrons. gains electrons. gains neutrons.