Nella figura è rappresentato il grafico velocità-tempo di un oggetto attaccato a una molla.
0,005
0,004
0,003
0,002
0,001
v(m/s)
0 -
0
1000V
2000
3000
4000
-5000
6000
7000
8000
-0,001
-0,002
-0,003
-0,004
-0,005
t(s)
Osserva il grafico e ricava:
il periodo del moto;
la frequenza del moto;
► l'ampiezza;
la velocità massima;
l'accelerazione massima.
help

Aparticle's position is given by x = 3.00 - 9.00t + 3t2, in which x is in meters and t is in seconds. (a) what is its velocity at t = 1 s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer "0". (f) is there a time after t = 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer "0".