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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

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

Grade:11

1 Answers

Kurma Anudeep
30 Points
9 years ago

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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