Mechanics> kinematics...
an elevation car whose floor to ceiling distance is 2.7 metre starts ascending with constant acceleration of 1.2 m/s^2. 2 sec after start a ball begins to fall from the ceiling of the car.find the free fall time of the ball
1 Answers
t=2s
d=2.7m
a=1.2m/s^2
a=dv/dt
1.2=2.7v/5.4
v=2.4m/s
v=ds/dt
2.4=d(2.7)/dt
t=2.7/2.4
t=1.125s
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